Preheat oven to 400 F. Rinse and slice potatoes into ½" thick rounds.
Spray baking sheet and arrange the potato slices in a single layer. Lightly drizzle oil on slices, then sprinkle with salt and cinnamon, and top with brown sugar.
Bake for 20 minutes on the top rack of your oven. Turn oven to broil setting and cook for 1-3 minutes more.
