Preheat the oven to 180°C (356°F).
Mash chicken breast and tofu together in a bowl.
Add egg, low-fat mozzarella cheese, oat flour, salt, and pepper, then mix well.
Divide the dough into appropriate portions and shape them into balls.
Line a baking pan with parchment paper and place the dough balls on it.
Bake in the oven at 180°C (356°F) for 15 to 20 minutes.