Wash and peel carrots. Slice off top of carrots and cut with a mandoline to make very thin slices. (It helps to put your mandoline on close to its thinnest setting! Also, be careful and be sure to wear proper safety gloves.)
Lay carrot slices on a wire baking rack on top of a baking sheet lined with parchment.
Spray carrot rounds with cooking spray and season as desired. Flip and repeat.
Bake 15-20 minutes until dry and crisp. Watch so they don’t burn!