Yes! Place them on a baking tray lined with parchment paper and freeze for a few hours. After that, place them in an air-tight container or a bag and keep in the freezer for a couple of months. When you're ready to defrost them, place them on the baking tray again and leave for an hour or so. If they look soft, wet or soggy then bake them for a few minutes to help with drying and crisp.