Have you not read the air fryer thread? Yes, you can make excellent chips with just a little olive oil. Just ignore the instructions from the manufacturer. Can't remember exactly how UK1 does it but I boil rinsed and chipped potatoes for 10 minutes, drain and allow to cool and dry (doesn't have to be as dry as when using lard, as UK1 explains, water on the surface is what draws the oil in and there's not that much oil to draw in). Brush olive oil on the chips, let them cook at 160C for ten minutes, take them out, let them cool while I do another batch, then crank up to 200C, might brush some more olive oil on then cook for at least another 10 minutes.

Or I might toss chipped sweet potatoes (the white flesh purple skinned kind) in some olive oil and bung them in directly. 10 minutes at 200C and they are done to a tee. Or chop squash, dress in a little olive oil with crushed/grated garlic, salt and pepper and throw those in for 10 minutes at 200C. You can roast/fry daikon in the same way.