If it's the pre-cut freezer kind, roast them in the oven with a bit of oil a 170-200c. When they're done, switch the fan on to crisp them up for a bit. Way less oil, only one sheet pan to clean, and you can cook single batches. Bonus, you don't have to constantly watch them. Just check on them every 5 min after about 30 min. No oil bath to worry about either.

Downside is you have to wait for oven to heat up.