Trim the chicken pieces of excess fat and pat dry with a cloth or paper towel—season with salt and pepper.
Put the chicken in a ziplock bag or glass bowl and add half of the lemons, onions, and garlic. Sprinkle with the Maggie, mix well, and let it marinate in the fridge for 2 hours or preferably overnight.
Drain the chicken and reserve the marinade for the sauce.
Preheat a grill, griddle, or frying pan and spray it with cooking spray. Sear the chicken for 5 minutes on each side on the grill or 5-6 minutes on the stovetop (until browned). Remove from the heat and set aside.
Heat a saucepan on medium heat, then add the olive oil, remaining onions, remaining garlic, bay leaves, mustard, Scotch bonnet pepper, and reserved marinade. Cook for about 5 minutes.
Add the chicken to the saucepan and bring it to a simmer over low heat, spooning the sauce over the chicken to coat it.
Add a cup of chicken stock (or water), lightly season with salt and chicken bouillon or Maggie. Cover and cook until the chicken reaches an internal temperature of 165℉/75℃ (18-20 minutes).
Adjust seasonings to taste with salt, pepper, and Maggie. Turn off the heat, remove bay leaves, and arrange the chicken on a plate.
Drizzle the sauce over it and garnish with the remaining lemon slices. Serve over rice, and enjoy.