Place chicken breasts in the bottom of your slow cooker.
Sprinkle ranch seasoning and au jus mix over the chicken.
Place the stick of butter on top of the chicken and add the pepperoncini peppers around it.
Cover and cook on low for 7-8 hours or high for 4-5 hours until chicken is tender and shreds easily.
Shred chicken with two forks and stir into the sauce. Serve over mashed potatoes, rice, or with crusty bread to soak up the delicious gravy.
