I read a story about two brothers who would bet each each other to do these crazy things for kicks. One of them is very allergic to chicken and carries an epi-pen just in case.
They’re sitting in a McDonald’s and the non-allergic brother bets the allegic one $100.00 to eat a nugget. Tells him not worry because he’ll hit him with the pen if anything goes wrong.
The allergic brother eats the nugget... nothing happened. Nothing.
I have a bunch of food "allergies", been tested, and they're not all the same. My allergy to fish has always very strong, but the chicken one was more variable. There were times I could eat a small bit of chicken and not really notice anything, but other times my mouth would itch after the first bite.
It may have something to do with the way it is cooked (drier chicken has always been more likely to provoke a reaction), or it may be the type of thing where your body doesn't have a reaction until it builds up a certain amount of whatever the agent is that causes a reaction.
I'm pretty sure that McNuggets are actually chicken. They may not be all chicken meat, and there may be some ground up bits in there, but it's all/mostly chicken.
Probably not allergic to chicken toes and beaks.