
Makes 4 servings
One 3- to 3 1/2-lb roasting chicken Kosher salt, as needed Freshly ground black pepper, as needed 2 sprigs thyme 2 sprigs rosemary 1/4 cup vegetable oil or butter, melted (optional) 1/2 cup medium-dice yellow onion 1/4 cup medium-dice carrot 1/4 cup medium-dice celery 1 tablespoon all-purpose flour 1 1/2…