Ah, a topic of much conversation...around here I attributed it to people of French Canadian descent, the French word for foilage being "feuillage." Then again, maybe people just butcher the word for no reason.
Geez, I'm off for a few hours and it all goes to pot!
As for the French thing, I am pretty sure the ones saying it here in NC are NOT French. I think they are the same ones that call it CHIPOLE-TAY.