I've only recently got an air fryer and haven't tried them yet but they should be ok. You won't need to precook the potatoes though and you might need to reduce the aquafaba a little to stop it running through the holes. You would also need to be careful about not overloading it so you can turn them all easily. They don't get as crisp as with oil so might break a bit. Or you could skip the aquafaba and use a tablespoon or 2 of oil instead.

Other than omitting the salt, I don't know what to suggest other than to just buy low sodium tacos seasoning and chickpeas (or cook your own).

So glad you enjoyed them!

Good for you! This is a great recipe to start with as who doesn't like fries? And they are so tasty. As for the crema, you could use silken tofu instead of the cashews, blended with a little non-dairy milk, the lime and seasoning to taste. Add the milk gradually so you get the right consistency. Silken tofu makes great silky smooth sauces. You will find it in the fridge with the other tofus at the store and it is usually in a tetra pack rather than plastic wrapped like the others. If you can't get silken tofu and you have an avocado handy this recipe would work really well in place of the crema and is super quick and easy to make. https://avirtualvegan.com/creamy-avocado-lime-dressing/ Hope that helps and I hope you enjoy it!