In a large skillet over medium-high heat, cook the ground chicken and onion until the chicken is cooked through. Drain any excess fat.
Add the enchilada sauce, black beans and corn to the pan and stir until everything is combined. Cook for an additional 2-3 minutes.
In a 9x13 inch baking dish, layer half of the tortilla strips on the bottom. Top with half of the chicken mixture and then sprinkle with 1 cup of cheese.
Repeat this layering process one more time (tortillas, chicken mixture and cheese).
Cover with foil and bake for 25 minutes. Remove foil and bake for an additional 10 minutes or until cheese is melted and bubbly.