Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Cut the chicken breast into 1-inch strips and slice the bell pepper and zucchini into bite-sized pieces.
In a large mixing bowl, whisk together the extra virgin olive oil, lemon juice, lemon zest, dried oregano, garlic powder, sea salt, and black pepper.
Add the chicken strips, broccoli florets, bell peppers, and zucchini to the bowl and toss thoroughly until every piece is coated in the marinade.
Spread the chicken and vegetable mixture in a single, even layer on the prepared baking sheet.
Roast in the oven for 20 to 25 minutes, or until the chicken is cooked through and the vegetables are tender with slightly caramelized edges.
Serve immediately, garnished with extra fresh herbs if desired.