Preheat the oven to 350°F (175°C) and grease a 9-inch (23cm) baking dish with nonstick spray.
In a medium bowl, beat the cream cheese until smooth. Add the cottage cheese, sour cream, garlic powder, onion powder, dried parsley, and cream of chicken soup. Stir well to combine.
Stir in the cooked shredded chicken and pour the mixture into the prepared baking dish.
In a separate bowl, combine the crushed Ritz crackers and melted butter. Sprinkle this mixture evenly over the chicken mixture.
Bake in the preheated oven until the casserole is bubbly and the top is golden brown, typically 30-40 minutes.
Remove from the oven and let it cool for a few minutes before serving.
