01 - Combine chilies, garlic, smoked paprika, sweet paprika, oregano, thyme, olive oil, lemon juice, red wine vinegar, salt, and black pepper in a food processor or blender. Process until smooth.
02 - Place chicken thighs in a large bowl or resealable bag. Pour marinade over the chicken, massaging to coat thoroughly. Cover and refrigerate for a minimum of 2 hours, preferably overnight.
03 - Preheat grill or oven to 400°F (200°C).
04 - Remove chicken from the marinade, allowing excess to drip off. Set leftover marinade aside for basting during cooking.
05 - For grilling: Place chicken skin-side down over medium-high heat. Grill for 6–7 minutes per side, basting occasionally with reserved marinade. For oven method: Arrange on a rack and roast for 30–35 minutes, basting as needed, until juices run clear and a thermometer registers 165°F (75°C) at the thickest part.
06 - Allow the chicken to rest for 5 minutes. Garnish with lemon wedges and fresh herbs before serving.