Put the chicken breasts in the slow cooker. Sprinkle the au jus and ranch seasonings over and add in the pepperoncinis, juice, and butter. Place the lid on and cook on LOW for 4 -5 hours or on HIGH for 2 - 3 hours.

Shred the chicken in the slow cooker with a meat masher or forks, stir everything to combine in the slow cooker and serve hot! (I normally discard the pepperoncini peppers once the chicken is cooked). This goes great with steamed veggies, mashed potatoes, rice, or cauliflower rice.