Preheat your air fryer to 375°F (190°C).
Cut the chicken breast into 1-inch cubes and chop the red bell pepper into bite-sized pieces.
In a large mixing bowl, combine the chicken cubes, broccoli florets, and bell pepper pieces.
Drizzle the olive oil over the mixture and sprinkle with smoked paprika, garlic powder, onion powder, sea salt, and black pepper.
Toss everything thoroughly until the chicken and vegetables are evenly coated in oil and spices.
Transfer the mixture to the air fryer basket, spreading it out into a single layer to ensure even cooking.
Air fry for 12 to 15 minutes, shaking the basket halfway through, until the chicken reaches an internal temperature of 165°F and the vegetables are tender with slightly charred edges.
Remove from the air fryer and serve immediately.