It may claim its food is "finger lickin' good", but until recently strict Muslims might have seen a problem with it.
Now fast food chain Kentucky Fried Chicken (KFC) is trialling halal meat - meaning it has been killed in accordance with Islamic dietary laws - in eight of its UK restaurants. But the trial has sparked a debate over what is and what isn't halal, with some Muslims boycotting the restaurants because they say the meat has not been killed correctly.
The issue is whether meat can be halal if it has been slaughtered using mechanical methods.
Traditionally, halal meat is killed by hand and must be blessed by the person doing the job. But some Muslims say a mechanised form is also now acceptable.