Preheat the oven to 190C.
Position a rack above a baking tray. Spray or brush the rack with oil.
Rinse the potatoes well, scrubbing the skins to remove all traces of soil. Slice thinly (no need to peel), about 1/8-inch.
Brush both sides of each slice with olive oil.
Arrange on the rack in a single layer. Sprinkle with salt and herbs.
Bake at 190C oven until crispy and nicely browned (the actual cooking time depends on both the size of the potatoes and thickness of the slices).