I'm looking for some lost media, something that has made me stay up at night.

I want to say I saw this around 2003-2008, it was in live action but I'm positive it aired on Nickelodeon.
Here's the premise: An alien comes to earth and opens up a restaurant inside a mall. They're there to study humans. Soon a bunch of customers come in and one of the aliens in disguise goes to take their order. The group orders hamburgers but they have to explain to the alien what a hamburger is: cooked meat on buns. The aliens realize that they don't have any meat, so they lure one of the customers into the bathroom and cook him into burgers. I distinctly remember the customers saying it was the best hamburger they ever had.

please tell me someone has this. No, it isnt Mr. Meaty