Mix the Dry Ingredients: In a small bowl, whisk together almond flour, Italian seasoning, and garlic powder until evenly combined, about 30 seconds.
Combine Wet and Dry: Crack the egg into the bowl and whisk vigorously for about 1 minute until the mixture is smooth and no lumps remain.
Add the Cheese: Fold in the shredded mozzarella and grated parmesan using a spatula, stirring until the cheese is fully incorporated, another 30 seconds.
Prepare Your Waffle Maker: Preheat a mini waffle maker over medium heat and lightly grease it with cooking spray or butter, about 2-3 minutes.
Pour and Cook: Pour half the batter into the center of the waffle maker and close the lid gently, cooking for 4-5 minutes until the edges are golden brown and crispy.
Check for Doneness: Open the waffle maker carefully and check that the chaffle is firm and holds together, if it sticks, cook another 30 seconds.
Remove and Keep Warm: Using a small spatula or fork, carefully lift the chaffle out and place it on a plate, repeat with remaining batter to make a second chaffle.
Add Toppings: While the chaffles are still warm, top with pizza sauce, mozzarella, pepperoni, and any additional toppings you prefer, allowing the residual heat to slightly melt the cheese.