Preppers Diet Food Gwanghwamun serves chicken breast rice bowls and pasta as a diet meal fast-food shop in Gwanghwamun. The chicken breast curry rice bowl comes with black rice and vegetables, and the sous-vide chicken breast is moist and tender. The sous-vide chicken breast pasta is served warm with a sweet-and-sour sauce, and takeout curry is packed in a separate container so the amount can be adjusted. The seating inside the shop is limited.