1Combine vegetable oil, chili powder, oregano, garlic, onion, cumin, salt, pepper, and cayenne pepper in a large resealable plastic bag. Add chicken tenders, bell peppers, and onion; shake to mix.
2Marinate chicken mixture in the refrigerator, 30 minutes to 2 hours.
3Preheat oven to 400 degrees F (200 degrees C). Line a rimmed sheet pan with aluminum foil.
4Spread chicken mixture onto prepared pan.
5Roast in the preheated oven, stirring halfway through, until chicken is no longer pink and bell peppers soften, 15 to 20 minutes.
6Sprinkle cilantro and pour lime juice over chicken mixture; toss to distribute.
Footnotes
Cook's Notes:
Use a variety of bell peppers and spicy peppers as desired.
Spray the sheet pan with nonstick cooking spray instead of lining it with aluminum foil if preferred.