In a large bowl, combine the chicken thighs with the scallions, thyme, vinegar, lime juice and 1 tablespoon oil. Marinate in the refridgefator for at least 2 hours or, but better yet, overnight.

Heat 1 tablespoon oil over medium-high in a Dutch oven. Season the chicken all over with salt and pepper. Working in batches, if necessary, sear the chicken until browned on both sides, 6 or 7 minutes per side. Get a good char on the skin side. Transfer the chicken to a plate and set aside.

In the same pot, heat the remaining 3 tablespoons of oil over medium-high heat. When the oil is hot, add the onions in an even layer, season with salt and pepper. Cook the onions stirring frequently. Cook until you get a nice caramelization. This will take 20 - 30 minutes.

Add the bell pepper, scotch bonnet chili, garlic, ginger, bay leaves and the mustard, and continue stirring, adding 1 to 2 tablespoons of water as needed to avoid scorching at the bottom of the pot. Cook for about 5 minutes. Stir in a 1/4 cup of lime juice, and season with 1 salt and pepper.

Add back in the seared chicken into the pot, tucking it under the onions. Next, top with 1 cup water, and stir well. Cover and simmer over medium heat until chicken is cooked through and tender, about 30 minutes.

Season to taste and checking for lime juice and salt. Serve chicken over rice, with the onion mixture and sauce drizzled generously on top.

Enjoy!