Thoroughly pat the chicken dry with paper towel. Place the chicken, breast side up, in a baking dish. Season the inside and outside of the chicken with salt and pepper. Stuff the cavity of the chicken with the cooled pork mixture, pressing it in firmly. Depending on the size of the chicken’s cavity, there may be excess stuffing. In this case, cover the excess stuffing with foil before cooking. Tie the legs with butcher’s twine. With your fingers, spread the remaining butter over the chicken skin.