Peel and thinly slice the potatoes using a mandolin or sharp knife. The thinner the slices, the crispier they'll turn out.
Combine cold water and ice in a large bowl and soak the potato slices. This helps remove extra starch from the potatoes to make them crunchier.
In a separate bowl, mix together the brown sugar stevia, salt, smoked paprika, garlic powder, onion powder, and chili powder to make the BBQ seasoning mix.
Drain the potato slices and pat them dry with a paper towel.
Spray the potato slices lightly with olive oil or avocado oil spray.
Sprinkle the BBQ seasoning mix over the potato slices and toss to coat evenly.
Air fry the potato chips at 200°C/400°F for 10-15 minutes, flipping and spraying with oil halfway through, until crispy.
Alternatively, bake the potato chips in the oven at 200°C/400°F for 15-25 minutes, flipping and spraying with oil halfway through, until crispy.
For the microwave method, place the potato slices on an oven-safe dish lined with baking paper, microwave for 8-12 minutes, flipping and spraying with oil halfway through.
