Prepare the Slow Cooker: Lightly grease the inside of your slow cooker with non-stick spray or oil to prevent sticking. Place the chicken breasts at the bottom, ensuring they lay flat.
Make the Gravy Mixture: In a bowl, whisk together the chicken gravy mix, cream of chicken soup, chicken broth, garlic powder, onion powder, and black pepper until smooth. Pour the mixture over the chicken, making sure it’s fully covered.
Slow Cook the Chicken: Cover and cook on low for 6-7 hours or high for 3-4 hours. The chicken should be tender and easy to shred with a fork.
Shred the Chicken: Once cooked, use two forks to shred the chicken directly in the crockpot. Stir everything together so the chicken soaks up the rich, flavorful gravy.
Add the Sour Cream: Stir in the sour cream and let it warm through for about 5 minutes. This makes the gravy extra creamy and smooth.
Serve and Enjoy: Spoon the chicken and gravy over mashed potatoes or rice. Serve warm.