In a large skillet, saute the zucchini, peppers, onion, carrot and garlic in butter for 8-10 minutes or until tender. Sprinkle with Italian seasoning, oregano and pepper; toss to coat.
Place the crust on an ungreased baking sheet or pizza pan. Spoon vegetable mixture onto crust to within 1/2 in. of edges. Top with tomato and cheese. Bake at 450° for 8-10 minutes or until cheese is melted.