Preheat your oven to 400 degrees.
Place the four chicken breasts in a greased 9x13 baking dish.
Season the chicken with salt and pepper to taste.
Sprinkle the ranch seasoning and au jus mix evenly over the chicken.
Cut the stick of butter into eight equal pieces and place two pats on each chicken breast.
Top each chicken breast with sliced pepperoncinis.
Drizzle a small amount of pepperoncini juice over the chicken.
Bake uncovered for about 30 minutes, or until the chicken is fully cooked.
Decide whether to serve the chicken whole or shredded.
