01 - Using a sharp knife or mandoline, cut cucumbers into uniform thin slices and pat dry with paper towels.
02 - In a large mixing bowl, toss cucumber slices with olive oil to coat evenly. Sprinkle everything bagel seasoning and kosher salt over the cucumbers, mixing gently until well distributed.
03 - Place seasoned cucumber slices in a single layer on a parchment-lined baking sheet, making sure the slices do not overlap.
04 - Bake in a preheated oven at 200°F for 90 minutes, flipping slices halfway through, until chips are golden brown and crispy.
05 - Allow chips to cool completely on the baking sheet before serving to maintain crisp texture.