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Easy Juicy Sheet Pan Chicken Fajitas Recipe with Peppers and Onions for Perfect Weeknight Dinner

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A quick and easy sheet pan chicken fajitas recipe featuring juicy chicken, caramelized peppers, and onions, perfect for busy weeknight dinners.

Ingredients

Scale
  • 1.5 pounds boneless, skinless chicken breast, thinly sliced
  • 3 medium bell peppers (red, yellow, green), sliced into strips
  • 1 large yellow onion, thinly sliced
  • 3 tablespoons olive oil
  • 2 teaspoons chili powder
  • 1 teaspoon cumin
  • 1 teaspoon paprika (smoked paprika optional)
  • 1 teaspoon garlic powder
  • ½ teaspoon onion powder
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • Juice of 1 lime
  • Fresh cilantro, chopped (optional, for garnish)
  • Flour or corn tortillas, warmed (for serving)

Instructions

  1. Preheat your oven to 425°F (220°C).
  2. Slice the chicken breasts into thin strips about ½ inch wide.
  3. Core and seed the bell peppers, then slice into strips similar in size to the chicken. Peel and slice the onion thinly.
  4. In a large mixing bowl, combine chicken strips, peppers, onions, olive oil, chili powder, cumin, paprika, garlic powder, onion powder, salt, and pepper. Toss until well coated.
  5. Spread the mixture evenly across a rimmed sheet pan in a single layer, ensuring ingredients have space to roast properly.
  6. Place the sheet pan in the preheated oven and roast for 20-25 minutes, stirring halfway through (around 12 minutes) for even cooking and browning.
  7. Check that the chicken is cooked through and no longer pink inside, and that the peppers and onions are tender with some caramelized edges.
  8. Remove from oven and squeeze fresh lime juice over everything, then toss gently to combine.
  9. Garnish with chopped cilantro if using, and serve immediately with warmed tortillas.

Notes

Slice chicken thinly to keep it juicy and cook quickly. Avoid overcrowding the pan to ensure proper roasting and caramelization. Stir halfway through cooking for even browning. Fresh lime juice added after cooking brightens flavors. For a gluten-free option, use corn tortillas or serve as a bowl. Protein swaps include turkey breast or firm tofu (adjust cooking time accordingly).

Nutrition

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