In a large skillet, heat olive oil over medium heat. Add the chopped onion and red bell pepper. Sauté for about 5 minutes until they are softened.
Stir in the shredded chicken, black beans, corn, diced tomatoes with green chilies, cumin, chili powder, garlic powder, salt, and pepper. Cook for another 5 minutes until everything is well combined and warmed through.
In a 9x13 inch baking dish, layer half of the crushed tortilla chips evenly on the bottom.
Pour the chicken mixture over the tortilla chips, spreading it out evenly.
Top with the remaining crushed tortilla chips and sprinkle the shredded cheddar cheese over the top.
Bake in the preheated oven for 20-25 minutes, or until the cheese is bubbly and golden brown.
Remove from the oven and let it cool for a couple of minutes. Garnish with fresh cilantro before serving.