01 - Preheat oven to 425°F. Line a baking sheet with parchment paper and set aside.
02 - Steam or boil the peeled and cubed sweet potatoes until fork-tender, approximately 10–12 minutes. Drain thoroughly and mash until completely smooth.
03 - In a large mixing bowl, combine the mashed sweet potato, egg, almond flour, Parmesan cheese, garlic powder, salt, and black pepper. Mix until the mixture is uniform and well incorporated.
04 - Transfer the mixture onto the prepared baking sheet and spread it into a 12-inch round, approximately 1/4 to 1/2 inch thick.
05 - Bake the crust for 20–22 minutes until it is firm to the touch and lightly golden on 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, for 2–3 minutes. 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 cheese, then layer on the pepperoni slices. Scatter the sliced red onion and bell pepper over the top, if desired.
08 - Return the pizza to the oven and bake for an additional 8–10 minutes, until the cheese is melted and bubbly and the edges are crisp.
09 - Remove from the oven and generously drizzle the hot honey over the pizza. Top with fresh basil leaves and additional crushed red pepper flakes to taste.
10 - Slice into wedges and serve immediately while hot.