Ingredients: 1 (4-pound) chicken, boned and split in half lengthwise 1 tablespoon salt 1 teaspoon freshly ground black pepper 1/2 cup unsalted butter, melted 1/2 cup chopped onion 1/2 cup celery, chopped 1/2 cup chopped carrot 1/2 cup dried bread crumbs 1/2 cup shredded cheddar c…