Preheat your air fryer to 390°F (200°C) if preheating is recommended for your model.
Place the broccoli, zucchini, sweet potato, yellow squash, cauliflower, carrots, and red onion in a large mixing bowl.
Drizzle the vegetables with avocado oil or olive oil.
Sprinkle with sea salt, black pepper, garlic powder, and paprika.
Toss thoroughly until all vegetables are evenly coated.
Arrange the vegetables in a single layer inside the air fryer basket. Avoid overcrowding and work in batches if necessary.
Cook the Air Fryer Roasted Vegetables for 8–12 minutes, shaking the basket halfway through cooking.
Continue cooking for an additional 2 minutes if you prefer extra caramelization and crispier edges.
Transfer to a serving bowl.
Garnish with fresh parsley, cracked black pepper, and lemon wedges before serving.