1. In a bowl, whisk together olive oil, lime juice, minced garlic, chopped cilantro, chili powder, cumin, oregano, paprika, salt, and pepper.
2. If desired, add optional ingredients such as chipotle peppers, orange juice, or honey for extra flavor.
3. Place the chicken breasts, thighs, or preferred cuts into a large zip-top bag or shallow dish.
4. Pour the marinade over the chicken, ensuring each piece is well coated.
5. Seal the bag or cover the dish and refrigerate. Let the chicken marinate for at least 2 hours, ideally up to 24 hours for maximum flavor.
6. When ready to cook, remove the chicken from the marinade and discard the leftover marinade.
7. Cook the chicken using your preferred method: grilling, baking, or pan-searing in a skillet.
8. Cook until the internal temperature reaches 165°F (75°C) and the chicken is fully cooked.
9. Let the chicken rest for a few minutes before slicing or serving.
10. Use the flavorful chicken in tacos, fajitas, burritos, salads, or any Mexican-inspired dish.