I had no idea there was such a thing. Perhaps they don't sell them here, or since I'm a low-carb eater I never spotted them in the snack aisle.
The picture looked like fried pork rinds (chicharrónes) which I do eat because they have zero carbs.
The only quavers I knew up 'till now were what the British people call eighth notes.
Then of course there are semiquavers and I think semidemiquavers or something like that.