Preheat your oven to 350°F (175°C).

Lightly coat a 9x13 inch baking dish with butter or cooking spray.

In a large mixing bowl, combine softened cream cheese, cottage cheese, sour cream, and cream of chicken soup. Mix until smooth.

Add garlic powder, onion powder, and black pepper. Mix well.

Fold in the cooked chicken until fully coated.

Spread the mixture evenly across the greased baking dish.

In a separate bowl, combine crushed Ritz crackers with melted butter until coated.

Evenly distribute the cracker mixture on top of the chicken layer.

Bake for 30-40 minutes until golden brown and bubbly.

Let the casserole sit for about 5 minutes before slicing.