I have the same problem on week ends. But it's Coffee-mate. Lucky likes it. My 1st cup in the morning on Sat & Sun I put a little in. If I let the cup out of my site for more then a secound, he's in there full face.
I don't know what it is about Lays chips. Both Lucky and Egypt love them, but BBQ only, no other brand or type. Wife has problems with Boo Boo and corn chips.