The best olive oil potato chip I’ve found comes from Good Health Natural Foods. Kettle style, with a great crunch, and not too salty. Way too easy to eat the whole bag.
Dave over at Dave’s Cupboard tried the cracked pepper and sea salt variety and really loved them. I like them a lot too, but find they’re quite heavy on the pepper. Haven’t tried the rosemary or garlic ones yet.
Aldi seems to get them in once a year, so stock up then for ~$1.59/bag. Otherwise, you can get ’em on Amazon (12 pack) for a little more. (If you purchase from Amazon directly.) Be careful though – resellers usually mark up to over $3.50/bag.