As always, low carbing usually just means using alternative ingredients. So, instead of potatoes, use celeriac/celery root.
How to prepare - peel the skin with a knife (a peeler will peel it too thin) and cut off all the gnarly bits. Slice into chips and microwave for 4 minutes until just tender.
Spread the chips on baking paper and smear with butter or olive oil. Sprinkle with garlic powder, onion powder, paprika and salt. Bake until golden, then flip each chip over and sprinkle again and bake.
Or if you'd prefer ... how about this?
The choice is yours.