That is why I can't work with others. I normally will eat one pizza all by myself, to the shock of everyone else around me. There is a downside to a fast metabolism (I know a lot of "fat" people who would still gladly trade downsides)

> eat one pizza all by myself, to the shock of everyone else around me

I'm puzzled. Which kind of cultural context does this unfold in? Are these pizzas extraordinarily large? Or is it just a cultural issue that you are supposed to share in any event?

Where I'm at (Northern Europe) ordinary pizzas are about the same size of a LP record (around 30cm, or one foot for the metrically challenged). Unless you specifically order multiple (and/or "family sized") pizzas you are really expected to eat the whole of one pizza by yourself. It's in no way remarkable.

House this one:

https://www.tasteofhome.com/article/pizza-hut-big-new-yorker...

That one is thin and really easy to eat the whole thing

Eating a Chicago deep dish by yourself would be impressive. They style from Giordanos or Lou's

When US people say "one pizza" (in group context), they usually refer to a pie around 40-45cm or so. A size where most people would eat roughly 2 slices.

Sharing my dinner with 5 people would make me very grumpy.