Preheat oven to 400 and spray sheet with nonstick spray.
In a medium sized bowl, whisk egg until well blended.
In a different medium sized bowl, stir together the breadcrumbs, parmesan, salt, pepper, and garlic powder.
Dip each chicken breast in the egg mixture, flipping to coat both sides.
Dip the egg covered chicken breast into the breadcrumb mixture.
Press the crumbs into the chicken breast and place on the baking sheet.
Repeat with all four chicken breasts.
Spray the chicken breasts with olive oil spray or baking spray.
Put in the oven and cook for 15 minutes.
Remove from the oven and add the chopped broccoli to both sides of the pan.
Bake the chicken and broccoli for another 5 minutes.
Remove from the oven and spread the marinara over the chicken breasts, then top with the shredded cheese.
Place back in the oven for 5 minutes or until the cheese is melted.
Remove chicken and broccoli from the oven, top with chopped basil.
Serve on top of rice, noodles, or riced cauliflower.