01 - In a large bowl, whisk together lime juice, olive oil, cilantro, garlic, cumin, chili powder, paprika, salt, and pepper until well combined.
02 - Add chicken thighs to the marinade, turning to coat thoroughly. Cover and refrigerate for at least 30 minutes, up to 4 hours for maximum flavor penetration.
03 - Preheat grill to medium-high heat, approximately 400°F.
04 - Remove chicken from marinade, allowing excess to drip off. Discard the used marinade.
05 - Grill chicken thighs for 6-8 minutes per side until nicely charred and internal temperature reaches 165°F.
06 - Transfer to a platter, cover loosely with foil, and let rest for 5 minutes before serving to allow juices to redistribute.
07 - Garnish with additional chopped cilantro and fresh lime wedges if desired. Serve immediately.