Preheat oven to 350 degrees F.
Run the sweet potato through a mandoline. You want the slices to be thin.
Put potatoes in a bowl or baggie. Spray with olive oil then add the brown sugar, cinnamon and salt. Mix the potatoes up.
Put potatoes on a baking sheet lined with parchment paper. Make sure they are in a single layer.
Bake for 20 minutes, flip then continue baking 20 minutes or until the potatoes have a nice golden color.