Preheat the air fryer to 375°F (190°C).
Pat the chicken breast dry with a paper towel and rub with half of the olive oil, smoked paprika, garlic powder, sea salt, and black pepper.
In a medium bowl, toss the broccoli florets, bell pepper strips, and cubed sweet potato with the remaining olive oil and dried oregano.
Place the sweet potato cubes in the air fryer basket first and cook for 5 minutes as they require more time.
Add the seasoned chicken breast and the remaining vegetables to the basket, ensuring they are spread out in a single layer for optimal air circulation.
Air fry for 12 to 15 minutes, flipping the chicken halfway through, until the chicken reaches an internal temperature of 165°F and the vegetables are lightly charred.
Remove the chicken from the air fryer and let it rest for 3 minutes before slicing to ensure the juices stay locked inside.