A classic, bring it back!

- 4 cups cooked chicken (fully cooked and shredded)
- 10.5 oz cream of chicken soup
- 1 cup sour cream
- 1/2 teaspoon onion powder
- 1/4 teaspoon garlic powder
- 1/4 teaspoon salt (or to taste)
- 1/8 teaspoon pepper (or to taste)
- 1 sleeve Ritz crackers (crushed)
- 6 tablespoons butter (melted)