Preheat oven to 350F. Grease a 6 quart casserole dish.
Place the shredded, cooked chicken in a medium saucepan over medium heat. Add the taco seasoning and amount of water indicated on the back of the taco seasoning packet. Cook until the seasoning is absorbed in the meat. Set aside.
Place 3 corn tortillas in the casserole dish so that the bottom is completely covered (You may have to cut one tortilla in half for it to cover the bottom evenly).
Add ⅓ of the seasoned chicken evenly over the tortillas.
Add ⅓ of the beans and ⅓ of the corn.
Repeat the process 2 more times, starting with the tortillas, and next adding the chicken, beans, and corn.
Add the green chilis evenly over the top.
Add the salsa and spread so the top is covered.
Sprinkle the cheese evenly over the top.
Bake in the preheated oven for 25 minutes or until hot. Serve warm!
Notes
This can be made in a 13x9 inch pan also. You will only do 2 layers instead of 3 layers, and will need to add more corn tortillas to each layer.