Creamy Chicken Fajita Pasta

Juicy chicken, charred peppers, and a cream sauce that clings to every piece of pasta make this skillet dinner hit harder than most weeknight pastas. The fajita seasoning brings smoke…

By Willow • September 17, 2026 • Reading time: 10 min

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Juicy chicken, charred peppers, and a cream sauce that clings to every piece of pasta make this skillet dinner hit harder than most weeknight pastas. The fajita seasoning brings smoke and warmth, the tomatoes with green chiles keep the sauce from tasting flat, and the cheese melts into a silky finish instead of turning heavy. It’s the kind of dinner that tastes like it took more effort than it did.

What makes this version work is the order. The chicken gets its own quick sear first, then the peppers and onion pick up color in the same pan, and the sauce builds right on top of those browned bits. That’s where the flavor lives. The cream and cheese go in after the broth and tomatoes have had a chance to simmer together, which keeps the sauce smooth instead of grainy or greasy.

Below you’ll find the small details that matter here: how to keep the chicken juicy, when the peppers should stop cooking, and what to do if your sauce tightens up before the pasta is coated. It’s a straightforward recipe, but the difference between good and great is in the timing.

The Trick to Keeping Fajita Chicken from Going Dry in Pasta

Chicken breast dries out fast when it sits in a pan too long, especially after it’s cut into strips. The fix here is simple: sear it quickly, pull it out, and bring it back only at the end. That short rest keeps the meat juicy while the sauce comes together.

The other thing that matters is heat. Bell peppers and onion need enough heat to char at the edges before they soften completely. If the pan is too crowded or the burner is too low, they steam instead of pick up that browned fajita flavor.

What Each Ingredient Is Actually Doing in This Dish

• Chicken breast — Lean chicken works well here because the sauce carries the dish, but it needs a fast sear and a short finish. Slice it into even strips so it cooks at the same pace and doesn’t dry out on the edges before the center is done.
• Fajita seasoning — This is the backbone of the whole pan. If you’re using a store-bought blend, check the salt level before adding extra at the end; some are much saltier than others. A homemade mix gives you more control over the smoke and heat.
• Chicken broth and heavy cream — The broth loosens the sauce enough to coat the pasta, while the cream gives it body. You can use half-and-half in a pinch, but the sauce will be a little thinner and won’t cling quite as well.
• Diced tomatoes with green chiles — These keep the sauce bright and give it that fajita-style background heat. Don’t swap in plain diced tomatoes unless you’re willing to add extra seasoning, because they won’t bring the same bite.
• Mexican blend cheese — Pre-shredded works here, though freshly shredded melts a little smoother. Add it off the hottest part of the burner so it melts into the sauce instead of turning stringy or grainy.
• Penne pasta — The ridges catch the sauce well, which matters in a dish this creamy. Any short pasta with grooves or tubes will work, but long noodles won’t hold the peppers and chicken as nicely.

Building the Skillet in the Right Order

Seasoning and Searing the Chicken

Toss the chicken with the fajita seasoning until every strip looks coated, then cook it in a hot skillet with one tablespoon of oil. You want golden edges and cooked-through centers, not dark crust on the outside and pale meat inside. If the pan looks crowded, cook the chicken in two batches so it browns instead of steaming.

Softening the Peppers Without Losing Their Bite

Add the second tablespoon of oil, then the peppers and onion. Cook them until they’re softened and the edges are lightly charred, which usually takes about five minutes in a hot pan. If they turn limp and wet before browning, the heat is too low or the skillet is overloaded. The little bit of char is what makes the sauce taste like fajitas instead of plain chicken pasta.

Pulling the Sauce Together

Stir in the garlic for just long enough to smell it, then add the broth, cream, tomatoes, smoked paprika, salt, and pepper. Let the mixture come to a gentle simmer, not a hard boil. A hard boil can make the cream look split before the cheese even goes in. Once the sauce looks glossy and lightly thickened, return the chicken, add the cheese, and stir until smooth.

Finishing with the Pasta

Add the drained pasta and toss until every piece is coated. If the sauce seems too thick, splash in a little pasta water or broth and toss again. Finish with cilantro and a squeeze of lime. That bright hit at the end keeps the whole dish from feeling too heavy.

Three Ways to Adjust the Pan Without Losing the Point

Answers to the Questions Worth Asking

Creamy Chicken Fajita Pasta

Creamy chicken fajita pasta with charred peppers, fajita-spiced chicken, and a smooth cheesy cream sauce tossed with penne. One-skillet comfort food with smoky, mildly spicy flavor from diced tomatoes with green chiles.

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Prep Time 15 minutes mins

Cook Time 25 minutes mins

Total Time 40 minutes mins

Servings: 4 servings

Course: Dinner

Cuisine: Mexican

Calories: 760

Ingredients Equipment Method Notes

Ingredients

  

Chicken & Veggies

• 1 lb boneless, skinless chicken breast sliced into strips
• 1 tbsp fajita seasoning chili powder, cumin, paprika, garlic powder, onion powder
• 1 tbsp olive oil divided
• 1 red bell pepper sliced
• 1 green bell pepper sliced
• 1 yellow onion sliced

Pasta & Sauce

• 12 oz penne pasta
• 3 clove garlic minced
• 1 cup chicken broth
• 1 cup heavy cream
• 1 can (10 oz) diced tomatoes with green chiles
• 1.5 cup shredded Mexican blend cheese
• 0.5 tsp smoked paprika
• 0.5 tsp salt
• 0.25 tsp black pepper

Finish

• 2 tbsp fresh cilantro chopped
• 1 lime lime cut into wedges

Equipment

• 1 cast iron skillet

Method

 

Season the chicken

1. Toss the chicken strips with the fajita seasoning until evenly coated.

Cook the pasta

1. Cook the penne pasta in salted boiling water until al dente, about 8-10 minutes, then drain and set aside.

Sear the chicken

1. Heat 1 tablespoon olive oil in a large skillet over medium-high heat, then add the seasoned chicken and cook until golden and cooked through, about 5-6 minutes; remove and set aside.

Char the vegetables

1. Add the remaining oil to the skillet, then cook the bell peppers and onion until softened and lightly charred, about 5-6 minutes.
2. Add the garlic and cook until fragrant, about 30 seconds.

Make the creamy fajita sauce

1. Stir in the chicken broth, heavy cream, diced tomatoes with green chiles, smoked paprika, salt, and pepper, then bring to a gentle simmer.
2. Return the chicken to the skillet and stir in the shredded cheese until melted and the sauce turns smooth and creamy.

Toss and serve

1. Add the cooked pasta and toss until fully coated in the sauce.
2. Top with fresh cilantro and serve with lime wedges.

Notes

For the smoothest sauce, melt the cheese over gentle simmering heat and stir until fully incorporated before adding the pasta. Store covered in the refrigerator up to 3 days; reheat gently on the stove with a splash of chicken broth if needed. Freezing is not recommended because the cream can break. For a lighter option, use half-and-half instead of heavy cream and shredded reduced-fat cheese.