First, preheat the oven to 375°F (190°C), ideally with a convection setting.

Next, wash the purple sweet potato thoroughly (peeling is optional).

Then slice it very thinly.

Place the slices in a bowl, drizzle with oil, season with salt and spices, and toss well to coat.

Arrange them in a single layer on a baking sheet lined with parchment paper (make sure they don't overlap).

Bake for 15 to 20 minutes, flipping halfway through.

Finally, when the edges are lightly browned and crispy, they're done!