Mysterious Joker is a manga series created by Hideyasu Takahashi for Shogakukan's CoroCoro magazines, in which it has been published since 2008. An anime series based on the manga begun in October 2014. The series follows the escapades of phantom thief Joker and his apprentice named Hachi as they steal treasures from around the world.
The Secret Gourmet Party (S02E02)
While trying to steal a valuable gourmet egg, Diamond Queen and Roko are captured by Millefeuille, a chef who's food is so good that you can't stop eating it no matter what. She ends up eating so much that by the next day she's become too fat and round to fit through a doorway, and doesn't care in the slightest as long as she and Roko keep getting more of the delicious food.