In a large mixing bowl, combine the well-drained cottage cheese and large egg. Mix thoroughly with a spatula or spoon until smooth.

To the cottage cheese mixture, add vital wheat gluten, oat flour, baking powder, garlic powder, onion powder, salt, and black pepper. Mix with a spatula or spoon until a thick, cohesive dough forms. It will be sticky.

In a small bowl, combine the shredded mozzarella cheese and optional diced turkey pepperoni or ham. Set aside.

Lightly flour your hands or spray with cooking spray. Take about 2 tablespoons of the cottage cheese dough and flatten it into a small rectangle or oval in your palm. Place about 1 teaspoon of the cheese filling in the center.

Carefully fold the dough over the filling and pinch the edges together, then gently roll it into a log or ball shape, ensuring the filling is completely enclosed. Repeat with the remaining dough and filling, yielding approximately 10 rolls.

Preheat your air fryer to 375°F (190°C) for 5 minutes.

If desired, beat one egg in a small bowl for an egg wash. Dip each roll into the egg wash, then sprinkle with sesame seeds or everything bagel seasoning. This step enhances crispiness and flavor.

Line the air fryer basket with parchment paper (ensure it doesn't obstruct airflow) or spray with cooking spray. Arrange the rolls in a single layer, ensuring they don't touch. You will likely need to cook in batches.

Air fry for 12-15 minutes, flipping them halfway through, until golden brown and crispy. Cooking time may vary slightly depending on your air fryer model.

Remove from the air fryer and let cool for a few minutes before serving. Enjoy plain or with your favorite dipping sauce like marinara, sriracha mayo, or sugar-free ketchup.