The most mispronounced food are Croissants, Chorizo, Gyro and even Worcestershire sauce.
Chorizo is a Spanish sausage that is often a point of confusion and pronunciations vary globally from "cho-REE-zo" to the more Spanish word "Cho-ree-tho".
Croissant is very commonly mispronounced as "kruh-SAHNT" although the French pronunciation is closer to "kwah-SAHN".
Gyro is a sandwich that gets it's name from the Greek word for "to turn", making the correct pronunciation of Gyro "YEER-oh" and not a hard "G" sound.
Worcestershire sauce has a sheer number of letters that are unpronounced and makes it very difficult for some people to say.
Other most mispronounced foods are Gnocchi and Moussaka.
Gnocchi is an Italian pasta that is frequently mispronounced, with the correct pronunciation varying slightly in English as "NAA-kee" "NYAA-kee" or "NOH kee".
Moussaka is a Greek dish which is often mispronounced and the correct way to say and pronounce Moussaka is "moo-sah-KAH".