Place chicken, diced onion, bell peppers, habanero, scallions, beans, tomatoes, garlic, jerk marinade, soy sauce, brown sugar, thyme, cumin, allspice, black pepper, and cinnamon into a large slow cooker.
Stir gently to combine, ensuring chicken is nestled under the liquid.
Cover and cook on LOW for 6-8 hours or HIGH for 4 hours until the chicken is fork-tender.
While the chili cooks, prepare plantain chips. Slice off ends of plantains, score the peel, and remove skins. Thinly slice with a mandoline or sharp knife.
Heat oil in a deep pot over medium heat to 350°F. Fry plantain slices in batches for 4-5 minutes until golden brown and crisp. Transfer to a paper towel-lined plate and sprinkle with sea salt.
When chili is done, shred chicken with forks directly in the slow cooker. Stir in lime juice and chopped cilantro.
Taste and adjust seasoning if needed.
Serve hot, topped with cheddar, avocado, scallions, and a generous handful of plantain chips.