Spray a 9x13 pan and lay the frozen chicken pieces in it.
Pour can of diced tomatoes evenly over the chicken. Sprinkle the parmesan and the mozzarella cheese over the top side of each piece of chicken. Drizzle with olive oil and season each piece with a little sweet basil and a small amount of oregano.
Place in a 400 degree oven, uncovered for approx. 30 to 45 min.