Season chicken breasts with garlic powder, black pepper and salt.
In slow cooker, whisk together the water, gravy packets, condensed chicken soup, garlic powder, salt, paprika and pepper until smooth
Add the chicken breasts to the slow cooker and flip on both sides to coat well.
Cover and cook on low for 4-5 hours.
When done, carefully remove chicken, shred or cut as desired.
Whisk the sour cream into the slow cooker until smooth and serve over chicken.