Preheat and prep: Heat the oven to 400°F (200°C) if baking. Line a sheet pan with parchment and lightly oil or spray it.
Mix the base: In a large bowl, combine ground chicken, shredded mozzarella, Parmesan, egg, almond flour, garlic, parsley, onion powder, paprika, salt, and pepper.
Stir gently until just combined. Don’t overmix.
Shape: With damp hands or a small scoop, form 16–18 meatballs, about 1.5 inches wide.
Cook your way: Bake: Arrange on the sheet pan and bake 14–18 minutes, until the centers reach 165°F (74°C). Broil 1–2 minutes for extra color.
Pan-fry: Heat oil in a large skillet over medium heat.
Add meatballs and cook 8–10 minutes, turning to brown all sides, until cooked through.
Air-fry: Air-fry at 375°F (190°C) for 10–12 minutes, shaking once, until golden and done.
Serve: Spoon over warm sugar-free marinara, drizzle pesto, or toss in garlic butter. Finish with extra Parmesan and herbs.