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 slice the red bell pepper and zucchini into uniform bite-sized pieces.
Place the chicken, broccoli, peppers, and zucchini into a large mixing bowl.
Drizzle the extra virgin olive oil over the mixture and sprinkle with sea salt, black pepper, garlic powder, dried oregano, and onion powder.
Toss thoroughly with your hands or a large spoon until every piece of chicken and vegetable is well-coated in oil and seasoning.
Spread the mixture across the prepared baking sheet in a single layer, ensuring there is space between the pieces for even roasting.
Roast for 18 to 22 minutes, or until the chicken is cooked through and the vegetables have developed slightly charred, caramelized edges.
Remove from the oven and let the medley rest for 2 minutes before serving to allow the juices to redistribute.