1. Preheat oven to 425 degrees. Using a mandoline or a knife, thinly slice the carrots, then toss with oil and za’atar until each slice is well coated. 2. Lay flat without letting them touch each other on a parchment-lined baking sheet, then bake for 8 minutes. 3. Remove from oven and reduce heat to 225 degrees, then return to oven and bake for an additional hour, or until crispy. 4. Let cool completely to maximize crispiness. Can be stored in an air-tight container for up to 3 days.