Take two pre-baked pizza shells, coat top with olive oil. Sprinkle garlic salt on shell. Add thinly sliced fresh tomatoes, sliced mushrooms, sliced green peppers, onions, banana peppers, etc. Add grated mozzarella cheese. Bake for 10 min at 350°F.
Addition to above recipe...sprinkle garlic salt on the tomatoes after they're on the pizza shell, then add remaining ingredients.