Preheat your oven to 350°F (175°C).
In a large mixing bowl, combine the shredded chicken, black beans, corn, chipotle powder, salt, and pepper. Mix well until everything is evenly coated.
On a large baking sheet, spread out the tortilla chips in an even layer.
Spoon the chicken mixture evenly over the chips.
Sprinkle the shredded cheddar and Monterey Jack cheeses generously over the top.
Add diced tomatoes and jalapeños on top of the cheese.
Bake in the preheated oven for about 15-20 minutes, or until the cheese is melted and bubbly.
Remove from the oven and garnish with chopped cilantro and diced avocado.
Serve hot with sour cream and lime wedges on the side.