In a large bowl, mix together the chicken, broccoli, rice, garlic powder, onion powder, salt, pepper, and olive oil.
Transfer the mixture to a baking dish and spread it out evenly.
Top with shredded cheddar cheese.
Bake for 25-30 minutes, or until the chicken is cooked through and the cheese is bubbly.
Serve
Serve it straight from the pan for a cozy, comforting dinner that the whole family will love!