Why Do Some Black People Act As If They Invented Chicken ?

this is not a racist question because i like chicken also . im asking this becaus one day i had a girl at radio shack tell me white people dont know nothing about fried chicken ? now instead of being straight forward i just looked at her confused. but if im mistaken everything that black consider soul food for the exception of gumbo that was created by creole didnt white invent this ? why would someone tell me i dont know nothing about fried chicken when kfc is white etc?