Hi there,
mine used to do exactly the same, and she was 30min napping! I used to just feed her and get on with it, and she just grew out of it, I can't recall when though, but it didn't last too long. I know it might encourage snacking, etc, but couldn't think what else to do, plus I was worried that she might indeed be hungry.
I hope your lo grows out of it quickly, it was sooo frustrating when I was trying to stick to a routine! It was like 20 EASY's in 1 day!