In a small bowl, whisk together the avocado oil, jerk seasoning, lime juice, sea salt, and black pepper to create the marinade.
Coat the chicken breast thoroughly in the marinade and allow it to rest for at least 20 minutes to absorb the flavors.
In a medium saucepan, combine the basmati rice, rinsed kidney beans, coconut milk, water, smashed garlic clove, thyme sprig, and ground allspice.
Bring the rice mixture to a boil, then reduce the heat to low, cover tightly, and simmer for 15 minutes until the liquid is fully absorbed.
While the rice cooks, heat a grill pan or heavy skillet over medium-high heat and sear the chicken for 6 to 7 minutes per side until deeply charred and cooked through.
Remove the garlic clove and thyme sprig from the rice, then fluff the grains gently with a fork.
Slice the jerk chicken into strips and serve immediately over the coconut rice and peas, garnished with thinly sliced scallions.