Reheating fast food

No.10882519 ViewReplyOriginalReport
I am a nugget boy and typically order nuggets. When I order Mc Donald's and don't finish it, if I end up reheating the nuggets, it tastes like death and I cannot eat it anymore. On the other hand, when I order Popeyes and don't finish it, if I reheat the nuggets, it doesn't taste the same as before, but it still tastes well and I can eat it no problem.

Scientifically speaking, what makes some nuggies reheatable and others not?