Messy cake smash stuff and big stuffings are a pass for me because I know it's set up.
I also don't like the "eat clean-ish but lots of it" like Candii does where she basically goes to Erewhon's takeout section.
I want to watch them take down a meal that's big and positively bad for them, but not out of the ordinary - double burgers, fried stuff, donuts, etc.
The key for me is I want it to be a meal that would be heavy for most people but representative of a very average meal for them, so I can clearly see the daily habits adding up and reinforcing their obesity.