Spray a baking sheet with nonstick cooking spray or use a silicone baking sheet (my choice) or parchment paper. Slice 1 medium sweet potato into very thin slices.
In a large bowl, toss potato slices with 1 tablespoon olive or avocado oil and a pinch of sea salt to coat lightly. Lay the slices in a single layer on the prepared baking sheet.
Bake for 15 minutes. Flip each chip and bake for 5 minutes more or until chips are crisp. Watch carefully at the end so they don't burn.