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 marinade.
02 - Set aside 3 tablespoons of the prepared marinade in a small separate bowl. This will be used later for basting the chicken during cooking and as an extra serving sauce.
03 - Rub the remaining marinade thoroughly over the chicken, ensuring complete coverage including under the skin if possible. Place in a large dish or resealable bag, cover tightly, and refrigerate for minimum 2 hours or overnight for optimal flavor penetration.
04 - Prepare grill or oven to 400°F. If using a grill, lightly oil the grates to prevent sticking. Ensure the cooking surface reaches the proper temperature for even cooking.
05 - Arrange chicken skin-side up on grill grates or in a roasting pan. Cook for 35 to 40 minutes, turning once halfway through and basting with the reserved marinade. Continue until internal temperature reaches 165°F and skin is nicely charred and crispy.
06 - Remove chicken from heat and let rest for 5 minutes to allow juices to redistribute. Cut into serving pieces and arrange on a platter. Garnish with fresh parsley and serve accompanied by lemon wedges for squeezing over the chicken.