Preheat your air fryer to 400°F (200°C).
Cut the chicken breast into 1-inch bite-sized cubes.
Chop the red bell pepper into 1-inch pieces and slice the zucchini into half-moons.
In a large mixing bowl, combine the chicken cubes, broccoli florets, bell pepper, and zucchini.
Drizzle the olive oil over the chicken and vegetables.
Sprinkle the garlic powder, dried oregano, onion powder, sea salt, and black pepper over the mixture.
Toss everything thoroughly until the chicken and vegetables are evenly coated in the oil and spice blend.
Place the mixture in the air fryer basket in a single layer, ensuring there is enough space for air to circulate.
Air fry for 12-15 minutes, shaking the basket halfway through, until the chicken is cooked through and the vegetables are tender and slightly charred.
Remove from the air fryer, drizzle with lemon juice, and garnish with chopped fresh parsley before serving.