01 - Combine chili peppers, garlic, red bell pepper, smoked paprika, oregano, cumin, salt, black pepper, olive oil, red wine vinegar, lemon juice, and zest in a blender. Process until completely smooth, scraping down sides as needed.
02 - Set aside 3 tablespoons of the blended marinade in a small separate bowl for basting during cooking.
03 - Rub the remaining marinade thoroughly over the chicken, getting under the skin and into all crevices. Transfer to a large dish or sealable bag, refrigerate for at least 2 hours, preferably overnight for maximum flavor penetration.
04 - Preheat grill or oven to 400°F. If using a grill, brush grates with oil to prevent sticking.
05 - Arrange chicken skin-side up on grill grates or in a roasting pan. Cook for 35 to 40 minutes, flipping once halfway through and brushing with reserved marinade. Continue until internal temperature reaches 165°F and skin is crisp with charred spots.
06 - Let chicken rest for 5 minutes before cutting into portions. Garnish with fresh parsley and serve with lemon wedges alongside.