01 - Place the chicken breasts in a large resealable bag or shallow dish.
02 - In a bowl, whisk together cilantro, lime juice, olive oil, garlic, cumin, chili powder, smoked paprika, salt, pepper, and lime zest until well combined.
03 - Pour the marinade over the chicken; seal the bag or cover the dish. Refrigerate for at least 30 minutes (up to 4 hours for more flavor).
04 - Preheat grill or skillet to medium-high heat. Remove chicken from marinade, letting excess drip off.
05 - Grill or pan-sear chicken for 6–8 minutes per side, or until internal temperature reaches 165°F (74°C).
06 - Let chicken rest for 5 minutes before slicing.
07 - Serve with extra lime wedges, fresh cilantro, and choice of sides.