Preheat your oven to 350°F (175°C) and lightly grease a 9x13-inch baking dish.

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

Stir in the cream of chicken soup, garlic powder, onion powder, salt, and pepper. Mix until well combined.

Gently fold in the chopped cooked chicken, ensuring each piece is coated with the mixture.

Pour the chicken mixture into the prepared baking dish, spreading it out evenly.

Combine the crushed Ritz crackers with melted butter and mix until well-coated. Sprinkle this over the casserole.

Bake uncovered for 30-35 minutes until the top is golden brown and edges bubble.