Preheat grill to medium heat.
Mix harissa and tomato sauce together and spread over naan. Top naan with sprouts, olives, preserved lemons, feta and chili flakes. Grill on medium 5-7 minutes until cheese is melted and crust is crispy and brown.
Recipe by Lakewinds Food Co-op at https://www.lakewinds.coop/recipes/all/brussels-harissa-naan-pizza/