01 - Preheat oven to 425°F. Line a baking sheet with parchment paper and set aside.
02 - Steam or boil the cubed sweet potatoes until fork-tender, about 10–12 minutes. Drain thoroughly and mash until completely smooth with no lumps remaining.
03 - In a large mixing bowl, combine the mashed sweet potato, egg, almond flour, Parmesan, garlic powder, salt, and black pepper. Stir until the mixture is uniform and well blended.
04 - Spread the sweet potato mixture onto the prepared baking sheet, forming a 12-inch round about 1/4 to 1/2 inch thick. Smooth the surface evenly with a spatula.
05 - Bake the crust for 20–22 minutes until firm to the touch and lightly golden around the edges.
06 - While the crust bakes, gently warm the honey in a small saucepan over low heat with the chili flakes or hot sauce and apple cider vinegar if using. Stir for 2–3 minutes, then remove from heat and set aside.
07 - Remove the baked crust from the oven. Spread the marinara sauce evenly over the surface. Sprinkle with mozzarella, arrange pepperoni slices on top, and scatter the sliced onion and bell pepper if desired.
08 - Return the pizza to the oven and bake for another 8–10 minutes until the cheese is melted and bubbly and the edges are crisp.
09 - Drizzle the hot honey generously over the finished pizza. Top with fresh basil leaves and additional crushed red pepper to taste. Slice into wedges and serve immediately.