Prepare the Marinade: In a blender or food processor, combine the chopped scallions, red onion, Scotch bonnet peppers, salt, vinegar, cinnamon, clove, oil, soy sauce, brown sugar or piloncillo, minced garlic, grated ginger, and ground allspice. Blend until you have a smooth paste.
Marinate the Chicken: Place the chicken breasts in a shallow dish or a resealable plastic bag. Pour the marinade over the chicken, ensuring that it is evenly coated. Cover the dish or seal the bag and refrigerate for at least 4 hours, preferably overnight, to allow the flavors to penetrate the meat.
Preheat the Grill: Preheat your grill to medium-high heat, around 375-400°F (190-200°C). If using a charcoal grill, wait until the coals are hot and covered with ash.
Grill the Chicken: Remove the chicken from the marinade, shaking off any excess. Discard the remaining marinade. Place the chicken breasts on the preheated grill and cook for 6-8 minutes per side, or until the internal temperature reaches 165°F (75°C) and the juices run clear. Cooking time may vary depending on the thickness of the chicken breasts.
Rest and Serve: Once cooked, transfer the Jerk Chicken to a cutting board and let it rest for a few minutes before slicing. This allows the juices to redistribute, ensuring moist and tender chicken.
Serve the Jerk Chicken hot with your favorite sides, such as rice and peas, grilled vegetables, or coleslaw. Enjoy the bold and spicy flavors of this Jamaican classic!