Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Cut the chicken breast into 1-inch bite-sized pieces and slice the bell pepper into strips.
In a small bowl, whisk together the extra virgin olive oil, lemon juice, dried oregano, garlic powder, sea salt, and black pepper.
Place the chicken pieces, broccoli florets, and bell pepper strips onto the prepared baking sheet.
Drizzle the lemon-herb mixture over the chicken and vegetables, tossing well to ensure everything is evenly coated.
Spread the ingredients out in a single layer to ensure even roasting and browning.
Roast in the oven for 18-22 minutes, or until the chicken is cooked through and the vegetables are tender-crisp.
Remove from the oven and serve immediately while hot.