I can eat just a couple of chips because I'm not that thrilled with chips in general. Though even salt & vinegar chips, which I am kind of thrilled by, I don't usually eat the whole bag of in one sitting. After a while I've just had enough for then.
i actually stopped eating chips for a long time and now when i do eat some i can only eat a little bit at a time or else i feel unhealthy. so yeah, i eat about half of the little bags at a time