Set aside 16 whole tortilla chips, and crush enough remaining chips to measure 1 cup.
Stir together chicken, half of cheese, corn, and next 5 ingredients. Spoon into a lightly greased 11- x 7-inch baking dish. Sprinkle with remaining cheese and crushed chips.
Arrange whole chips around edge of dish.
Bake, covered, at 375° for 30 minutes or until bubbly. Serve with salsa. Garnish, if desired.