Sure, at least. I remember reading "champing" in the phrase (in books that were at least decades old by then) as a yout and questioning whether that was a typo or a mistake because I was certain I'd heard it as "chomping" when someone spoke it. My english teacher stated more and more people used "chomping" and it wasn't necessarily wrong. That was in the late 70's. I am olde and get offa my lawn.