Cover your baking sheet with tinfoil and coat with cooking spray.
Take another sheet of tinfoil and create a little “boat” to go in the middle of the tray to hold the chicken, thereby preventing the juices from running into the potatoes or broccoli. This boat should be about a third of the width of the total tray, which will split the tray into three parts (one for the potatoes, one for the broccoli, and one for the chicken.)
Cut the potatoes into thin round slices and lay the slices on one-third of the cooking sheet.
Cut the broccoli crowns down to small pieces and lay on another third of the cooking sheet.
Prepare your custom seasoning blend by mixing the salt, garlic powder, onion powder, black pepper, paprika, and parsley in a bowl.
Sprinkle the seasoning blend on both sides of your chicken breasts and lay the chicken breasts in the tinfoil boat you prepared.
Sprinkle the same seasoning blend over the potatoes and broccoli.
Lightly coat the potatoes, broccoli, and chicken with some olive oil.
Sprinkle the shredded Parmesan cheese over the potatoes, broccoli, and chicken. Go on, be generous with the cheese!
Bake at 400 degrees for about 22-25 minutes, or until the chicken is cooked through and the potatoes get a nice brown crust.