Alien Power in Princess!

Reuben brings Checkers to Izayoi, and the latter experiment turns Penny into the queen of the island. However, she soon grows tired of controlling everyone and wants Checkers to get off her head, but he refuses to do so. Stitch, who is unaffected by Checkers' powers but gets turned into a living pineapple thanks to a brainwashed Jumba, seeks Reuben's help to remove Checkers from Penny's head and stop her reign, using an incredibly spicy sandwich to get him to come off Penny's head on his own.