Wash and cut all the vegetables into similar-sized pieces so they cook evenly, no burnt or raw bits.
In a large bowl, toss them with the olive oil, garlic powder, herbs, salt, and pepper until every piece is lightly coated.
Preheat the air fryer to 380°F (190°C).
Add the vegetables in a single layer. Don't overcrowd, cook in batches if you have to.
Cook for 10 to 12 minutes, shaking the basket halfway, until the edges are crispy and golden.
Finish with a squeeze of lemon or a sprinkle of Parmesan and serve hot.