Preheat the oven to 400 degrees. Spray a 9 x 13 baking dish with cooking spray.
Place the chicken breasts in the bottom of the pan and drizzle with olive oil. Sprinkle with salt, pepper, and garlic cloves.
Place the broccoli over top of the chicken. Sprinkle the crumbled bacon over top of the broccoli. Finally, sprinkle everything with the mozzarella and cheddar cheeses.
Bake in the oven for 30 minutes or until the cheese is bubbling and the chicken is cooked to temperature.