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 to create a vibrant red sauce.
02 - Set aside 3 tablespoons of the blended marinade in a small bowl for basting during cooking and as a finishing sauce at the table.
03 - Rub the remaining marinade thoroughly over the chicken, coating all surfaces and underneath the skin. Place in a large container or resealable bag and refrigerate for at least 2 hours, preferably overnight for maximum flavor penetration.
04 - Heat grill or oven to 400°F. If using a grill, brush the grates with oil to prevent sticking.
05 - Position chicken skin-side up on the grill or in a roasting pan. Cook for 35–40 minutes, turning once halfway through and basting with the reserved marinade. Continue until internal temperature reaches 165°F and the skin is nicely charred and crispy.
06 - Let the chicken rest for 5 minutes to allow juices to redistribute. Cut into serving pieces and present with lemon wedges and fresh parsley sprinkled over the top.