Pre-heat oven to 425". Place pizza stone in oven as it pre- heats.
While pizza stone is heating, cut chicken breasts into 1/2 " pieces. Saute chicken and garlic until chicken is no longer pink. When pizza crust has heated up, spread 2 T. ranch dressing on the pizza crust Than add 1 cup
mozzerella cheese, than add chicken-garlic mixture, topped with the parmesan cheese. Top the parmesan cheese with the second cup of mozzerella cheese. Bake 10-12 minutes or until top is golden brown and bubbly. Let pizza rest for a few minutes, then slice and serve.