PREHEAT oven to 375°F. Mix salsa, corn, zucchini and chili powder.
LAYER 1/3 of the salsa mixture, 1/2 of the tortilla chips and 1/2 of the cottage cheese in 13x9-inch baking dish. Repeat layers. Top with remaining salsa mixture. Sprinkle with cheddar cheese.
BAKE 40 minutes or until heated through.