Creating Crack Chicken Casserole is as easy as following these steps:

1. Preheat your oven to 350°F (175°C).
2. In a large mixing bowl, combine the softened cream cheese, ranch dressing, garlic powder, onion powder, and black pepper until smooth.
3. Add the shredded chicken, crumbled bacon, and frozen mixed vegetables (if using). Stir well to coat all ingredients evenly.
4. Transfer the mixture into a greased 9×13-inch baking dish, spreading it out evenly.
5. Sprinkle the shredded cheddar cheese over the top.
6. If desired, add crushed tortilla chips to create a crispy topping.
7. Bake in the preheated oven for 30-35 minutes, or until heated through and bubbly.
8. Remove from the oven and garnish with fresh parsley if desired.
9. Let cool for about 5-10 minutes before serving.

These simple instructions will guide you in preparing a delicious Crack Chicken Casserole that is sure to impress.