Calorie labeling on restaurant menus, once confined to large chain restaurants in certain cities, is soon coming your way. On Tuesday, the Food and Drug Administration announced its final rules for nationwide nutritional labeling, implementing a little-known provision of the Affordable Care Act that called for its expansion. The rules stipulate that any business with more than 20 locations that sells prepared food—think vending machines and food trucks in addition to restaurants—will have one year to comply with the rules.