In 12-inch skillet, heat 1 Tbsp. oil, saute onion and garlic until onion is transparent. Add zucchini, mushrooms, red pepper and seasonings, stirring constantly. Saute until vegetables are tender crisp, (about 5 min.) remove from heat. In medium bowl beat eggs, add 2 oz. cheese and vegetables. Stir to combine. Grease an 8x8 inch baking dish with remaining 1 tsp. oil. Transfer vegetable mixture to dish. Sprinkle with remaining 2 oz. cheese. Bake at 400 degrees for 25-30 min. until puffy and browned and a knife inserted come out clean.