1. Start by preparing your marinade. In a small bowl, whisk together olive oil, lime juice, minced garlic, ground cumin, smoked paprika, chili powder, salt, and pepper.
2. Place chicken breasts in a large resealable bag or shallow dish. Pour the marinade over the chicken, ensuring each piece is well coated. Seal the bag or cover the dish, and let it marinate in the refrigerator for at least 30 minutes, or up to 4 hours for maximum flavor.
3. Preheat your oven to 375°F (190°C). While the oven heats, remove the chicken from the marinade and let it rest at room temperature for 10 minutes.
4. Arrange the chicken breasts on a baking sheet lined with parchment paper. Bake in the preheated oven for 20-25 minutes, or until the internal temperature reaches 165°F (75°C).
5. Once cooked, remove the chicken from the oven and let it rest for 5 minutes before slicing. This helps the juices redistribute, keeping the chicken tender and juicy.
6. Garnish with freshly chopped cilantro before serving for an extra burst of flavor.

I vividly remember the first time I marinated chicken with my grandmother. She taught me the importance of patience, allowing the flavors to meld together — a lesson that extends beyond cooking into life itself.