Preheat the oven to 350 °F (175 °C). Line a baking sheet with parchment.
Drain and rinse the chickpeas; reserve 2 tbsp aquafaba.
In a food processor, combine chickpeas, onion, olive oil, soy sauce, aquafaba, and nutritional yeast. Process 1 min until roughly blended.
Add flour, breadcrumbs, smoked paprika, parsley, oregano, and garlic powder; pulse 30 sec until mixture holds together but still slightly textured.
Transfer to a bowl and, using your hands, form 20–24 (1½ in) meatballs.
Arrange meatballs on the prepared sheet; freeze 20 min to firm up.
Bake 20 min, then gently turn each meatball and bake an additional 5 min, until golden and crisp.
Plate with pasta sauce, spaghetti, and a leafy salad, or enjoy as an appetizer with dipping sauce.