Creating the Creamy Jalapeño Popper Chicken Casserole is straightforward. Just follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Prepare the Chicken: In a large bowl, combine the cooked shredded chicken with the cream cheese, sour cream, shredded cheddar cheese, and shredded mozzarella cheese.
3. Add Spices: Mix in the diced jalapeños, garlic powder, onion powder, smoked paprika, salt, and black pepper. Stir until all ingredients are well combined.
4. Transfer to Casserole Dish: Grease a 9×13-inch casserole dish and pour the chicken mixture into it, spreading it evenly.
5. Add Topping: Sprinkle the crushed tortilla chips evenly over the top of the casserole.
6. Bake: Place the casserole in the preheated oven and bake for 25-30 minutes, or until the cheese is bubbly and the top is golden brown.
7. Garnish: Remove from the oven and let it cool for a few minutes. Garnish with fresh cilantro if desired before serving.

Following these steps will ensure your casserole turns out perfectly every time!