Add chopped chicken, BBQ sauce, undrained diced tomatoes, corn, onion powder, garlic powder, salt, pepper, and sour cream. Stir until well combined.
2 cup Leftover BBQ Chicken, ¾ cup BBQ Sauce, 1 15oz can Diced Tomatoes, 1 cup Corn, 1 teaspoon Onion Powder, 1 teaspoon Garlic Powder, ½ teaspoon Salt, ½ teaspoon Pepper, ½ cup Sour Cream