Preheat oven to 350 degrees. Spray a 9-by-13-inch baking dish with cooking spray. Set aside.
ln a large bowl, combine zucchini, onion, cheeses, pepperoni and spices and mix thoroughly. Set aside.
ln another bowl, combine oil, eggs and Bisquick. Mix well then add to zucchini mixture and blend thoroughly.
Spoon mixture into prepared baking dish. Bake in preheated oven for 35 to 40 minutes or until cheese starts to brown. If desired, spaghetti sauce may be served on the side. Makes 12 servings. Enjoy!