Dice chicken into small bite sized pieces. Chop and finely dice onion. Butcher collard greens into small strips removing the stem.
In a large skillet over medium heat place in olive oil, chicken, and spices. Cook chicken until it starts to brown.
Add onion to the skillet and mix. Crush garlic cloves and put into the skillet.
Put collard greens into the skillet and cover. Cook for 5-7 minutes until the greens are wilted.
Add drained black beans, chicken stock, tomato paste, worcestershire sauce, and soy sauce to the skillet.
Spread rice around skillet, stirring with a spatula to help make sure the rice is submerged. Place butter on the top so it will melt into the dish. Cover and cook for 15-20 minutes or until rice is done.