Bar far the very most likely "restaurant food" to cause food poisoning is hamburgers, because they are made with ground meat that each little piece may have come from a different place and been in contact with all manner of surfaces on its way to getting inside a burger.

The most common cause in the West is E.Coli bacteria, which usually make their way onto food when snotty High School kids that work in fast-food restaurants use the bathroom without washing their hand afterwards, and then either touch food, or touch surfaces that later touch the food.

I never understood why people with food allergies eat out
take a look at coriander and cumin
or test your self for MSG and fish sauce or ginger
if your the only one getting sick - - what does that tell you

Lol, what’s funny is that those are the two that I guessed, LOL