01 - Combine chili peppers, 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 you achieve a smooth sauce.
02 - Arrange the chicken thighs in a large bowl or resealable plastic bag. Pour the marinade over, ensuring all pieces are well coated. Cover and refrigerate for at least 2 hours, preferably overnight for optimal flavor development.
03 - Preheat your grill or oven to 400°F. Prepare grilling surface or roasting pan as needed.
04 - Remove chicken thighs from marinade, allowing excess to drip off. Reserve remaining marinade for basting during grilling or roasting.
05 - Grill chicken skin-side down over medium-high heat for 6 to 7 minutes, then turn and continue cooking for another 6 to 7 minutes. Alternatively, roast in the oven for 30 to 35 minutes, or until juices run clear and internal temperature reaches 165°F.
06 - Occasionally brush chicken with reserved marinade during cooking for enhanced flavor and moisture.
07 - Let chicken rest for 5 minutes after cooking. Finish with lemon wedges and freshly chopped herbs before serving.