Preheat the oven to 350°F (175°C) and spray a 9x13-inch casserole dish with cooking spray.
In a large mixing bowl, combine the shredded chicken, kosher salt, black pepper, onion powder, garlic powder, diced tomatoes with green chiles, softened cream cheese, cream of chicken soup, drained black beans, drained corn, sour cream, cumin, and smoked paprika until evenly mixed.
Scatter a layer of Doritos across the bottom of the prepared casserole dish.
Spread the chicken mixture evenly over the Doritos layer; it's okay if some chips break.
Top the chicken mixture with the remaining Doritos, then sprinkle the shredded cheese over the top (or sprinkle cheese first and then add chips if you prefer crisper chips).
Bake in the preheated oven for 20–25 minutes, until the casserole is bubbly and the cheese is melted and lightly browned.
Remove from the oven and garnish with pico de gallo before serving.