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 Dangerous Gourmet Party (Chapter 63)
While trying to steal a valuable gourmet egg, Diamond Queen is captured by Millefeuille, a chef who makes incredibly good food. Diamond Queen eats a lot of food, but doesn't notice her weight gain due to a mirror. She ends up too fat and round to fit through a doorway.
The Secret Gourmet Party (S02E02)
The anime version of Chapter 63. Diamond Queen and Roko are captured by Millefeuille and can't stop eating her cooking. They don't care in the slightest as long as they keep getting more of the delicious food.