Season the chicken: Remove the skin from drumsticks and chicken thighs, if needed. In a medium-sized bowl, season the chicken with adobo, garlic powder, onion powder, ground cumin, paprika and black pepper. Cover with plastic wrap and let marinate in the refrigerator for at least 1 hour, preferably overnight.
Brown the chicken: Heat the oil and sugar in a large dutch oven until hot. The sugar will turn brown as it starts to caramelize. Brown the chicken on all sides, the transfer it to a plate.
Prepare the cooking liquid: Add the chopped bell pepper, onion and sofrito to the pan. Use a wooden spoon to loosen the bits that were left behind from searing the chicken. Add the sazon, crushed bouillon cube and 3 cups of water. Stir until the seasonings are evenly distributed.
Add the rice and chicken: Bring the water to a simmer and taste it. If it needs more seasoning add ½ teaspoon of salt. Add the olives, rice and chicken. Once everything starts to simmer, lay the fresh cilantro over the rice. Cover the pot with a lid and turn the burner down low. Cook for 30 minutes.
Finish and serve: Remove the lid and discard the cilantro. The rice should be tender, and the water should be fully evaporated. Let sit covered for 5-10 minutes. Remove the chicken and set aside. Fluff the rice, place the chicken on top and serve.