Peel the potatoes and thinly slice using a food processor, a mandolin, or the old fashioned way (as I do) with a sharp knife. Trying hard to get them as close as possible in size.
After you have them sliced, Fill a medium- large bowl with water. Add the slices and let them soak for 20 minutes.
Heat the oven to 400°
After 20 minutes is up, drain the water. Lay out paper towels or a kitchen towel and place the slices on top. Make sure not to overlap.
Top with paper or kitchen towels and pat dry.
Lay out the slices on a baking sheet lined with foil and give it a spritz of cooking spray.
Brush the potatoes with the olive oil.
Pop em in the oven for 15 minutes. Then flip with tongs.
Mix up the sugar, onion salt, paprika, garlic powder, and chili powder in a small bowl.
After that this is the time where you really need to start watching the chips. Since they are all different sizes some with start to be ready before others. I set a bowl by the stove and keep close watch. Pull out any chips that are golden brown and put in the bowl.
Continue cooking and checking on them. Some chips will have brown edge and be a little soft in the center... that's fine, pull those so they don't burn.
Keep baking and pulling as they are ready to come out. A little tedious but worth the reward.
After all the chips are done, toss with the seasoning. Try not to eat them all before you serve them!
ENJOY!!!