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Easy Sheet Pan Fajitas Recipe with Bell Peppers and Onions

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A quick and easy sheet pan fajitas recipe featuring juicy chicken strips, colorful bell peppers, and caramelized onions, all roasted together for a flavorful, minimal-mess dinner.

Ingredients

Scale
  • 1 lb boneless, skinless chicken breasts or thighs, sliced into thin strips
  • 3 bell peppers (red, yellow, and green), sliced into strips
  • 1 large onion, thinly sliced
  • 2 tsp chili powder
  • 1 tsp smoked paprika
  • 1 tsp ground cumin
  • ½ tsp garlic powder
  • ½ tsp onion powder
  • ½ tsp dried oregano
  • Salt and freshly ground black pepper, to taste
  • Optional pinch of cayenne pepper
  • 2 tbsp olive oil
  • Fresh lime wedges, for serving
  • Flour or corn tortillas, warmed
  • Optional toppings: chopped cilantro, sliced avocado, sour cream, shredded cheese

Instructions

  1. Preheat your oven to 425°F (220°C).
  2. In a small bowl, combine chili powder, smoked paprika, cumin, garlic powder, onion powder, oregano, salt, pepper, and cayenne if using. Stir well.
  3. Slice the chicken into thin strips about ½ inch thick. Slice the bell peppers and onion into similar-sized strips.
  4. In a large bowl or zip-top bag, add the chicken strips, sliced bell peppers, and onions. Drizzle with olive oil, then sprinkle the seasoning blend over everything. Toss until evenly coated.
  5. Arrange the chicken and vegetables in a single layer on a large rimmed sheet pan, avoiding overcrowding.
  6. Roast in the oven for 20-25 minutes. Halfway through (10-12 minutes), flip the chicken and stir the veggies for even cooking. Ensure chicken reaches an internal temperature of 165°F (74°C).
  7. Remove from oven. Squeeze fresh lime juice over the fajita mix and toss lightly. Let rest for a couple of minutes.
  8. Serve the fajita filling in warm tortillas with your favorite toppings.

Notes

For best results, slice chicken and veggies evenly to ensure uniform cooking. Avoid overcrowding the pan to prevent steaming. Flip halfway through roasting for even browning. If veggies brown too quickly, tent loosely with foil. Prep can be done a day ahead and refrigerated. Use corn tortillas for gluten-free option. Substitute proteins or veggies as desired.

Nutrition

Keywords: sheet pan fajitas, easy fajitas, chicken fajitas, bell peppers, one pan dinner, quick dinner, healthy fajitas