Preheat broiler. Sprinkle beef with taco seasoning; cook in a large skillet over medium heat 8 minutes or until browned and crumbly. Remove beef from skillet; drain. Transfer to a plate.
Add beans and corn to skillet; cook 5 minutes or until lightly browned and tender.
Spread chips on a rimmed baking sheet. Top with beef, bean mixture, and cheese. Broil 2 minutes or until cheese melts. Top with tomato and onion.