Add chicken breasts to the bottom of your slow cooker. Try not to pile them on top of each other, or they will take longer to cook.
Sprinkle ranch seasoning and Au Jus Seasoning over top of all of the chicken then place butter on top. Add whole pepperoncini peppers around the chicken.
Close the lid and cook on HIGH for 2-3 hours or LOW for 4-6 hours.
Once chicken is cooked through, remove and shred to a fork or hand mixer to save time. Serve the chicken warm with sides of choice, or place on a toasted bun with your favorite cheese (I recommend provolone) and serve as a sandwich.
Leftover Storage: Store leftover chicken in and airtight container in the fridge for up to 4 days. Freezer Instructions: Once the chicken has cooled, store in a freezer bag or container and store flat in the fridge for up to 3 months. Let thaw and reheat before serving.Serving Suggestions: Enjoy alone with ranch dressing, over a side of mashed potatoes or served on a toasted bun with a slice of cheese.Au Jus Gravy Substitutions: If you can not find one you can make it from scratch easily or use a brown gravy packet or onion gravy packet.