Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Cut the chicken breast into 1-inch cubes and dice the sweet potato and red bell pepper into similar bite-sized pieces.
In a large mixing bowl, combine the chicken cubes, sweet potato, bell pepper, and broccoli florets.
Drizzle the extra virgin olive oil over the mixture and sprinkle with sea salt, black pepper, dried oregano, and garlic powder.
Toss everything together until the chicken and vegetables are thoroughly and evenly coated with the oil and seasonings.
Spread the mixture out in a single, even layer on the prepared baking sheet, ensuring the pieces aren't too crowded to allow for roasting rather than steaming.
Roast in the oven for 20 to 25 minutes, or until the chicken is cooked through and the vegetables are tender and golden brown.