Preheat oven to 350°F (175°C). Grease a baking dish.
Make the creamy base: In a bowl, mix cream of chicken soup, sour cream, garlic powder, onion powder, and Dijon mustard.
Add chicken: Stir in the shredded chicken until well coated.
Prepare the topping: In a separate bowl, mix crushed Ritz crackers with melted butter.
Assemble: Spread the creamy chicken mixture in the greased dish. Evenly sprinkle the buttery Ritz topping over it.
Bake: Place in the oven and bake for 30-35 minutes or until the topping is golden brown and crispy.
Serve and enjoy! Sprinkle with fresh parsley for extra flavor.