Place scallions, allspice berries, scotch bonnet peppers, thyme, brown sugar, lime juice, and seasoning in a blender or food processor. Blend until smooth, adding water or extra lime juice as needed to achieve a fiery, spreadable paste with a vibrant aroma.
Pat the chicken dry with paper towels and score the skin with shallow cuts to help the marinade penetrate better and promote crispy edges.
Rub the jerk marinade all over the chicken, making sure to get into the scored areas. Transfer the coated chicken to a large bowl or zip-top bag, seal, and refrigerate for at least 4 hours or overnight for maximum flavor.
Preheat your grill to medium-high heat, aiming for about 200°C (390°F). Lightly oil the grates to prevent sticking and ensure a good sear.
Remove the chicken from the marinade, letting excess drip off slightly. Place the pieces on the hot grill, listening for a satisfying crackle as they hit the surface.
Cook the chicken for about 6–8 minutes per side, basting with leftover marinade and turning carefully to develop a deep golden crust with charred spots.
Check for doneness by inserting a meat thermometer into the thickest part; it should read 75°C (165°F). The juices should run clear, and the skin should be crispy and caramelized.
Transfer the cooked chicken to a plate and let it rest for 5 minutes, allowing the juices to redistribute and keeping the meat tender.
Serve hot, with extra lime wedges or your favorite sides, and enjoy the smoky, spicy flavors that tell a story in every bite.