Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Pat the chicken breast dry with a paper towel to ensure the exterior gets properly crispy during roasting.
In a small bowl, whisk together the extra virgin olive oil, lemon juice, lemon zest, dried oregano, garlic powder, sea salt, and black pepper.
Place the chicken breast, broccoli florets, and sliced red bell pepper onto the prepared baking sheet.
Drizzle the lemon-herb oil mixture over the chicken and vegetables, tossing the veggies to coat and rubbing the marinade into the meat.
Arrange the ingredients in a single layer, ensuring the chicken has enough space to roast rather than steam.
Bake for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are tender with caramelized edges.
Allow the chicken to rest for 5 minutes before slicing to ensure it remains juicy and flavorful.