Preheat oven to 450~. Heat oil. Add zucchini, yellow squash and red pepper; sauce until veggies are almost tender, about 5 minutes. Place pizza crust on baking sheet. Spread mushroom sauce over. Sprinkle with garlic, then mozzarella. Top with squash mixture and tomatoes. Sprinkle with Parmesan. Bake pizza until cheese melts and crust is crisp, about 13 minutes. (wrv)