Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Cut the chicken breast into bite-sized pieces and place them in a large mixing bowl.
Add the broccoli florets, chopped red bell pepper, and sliced zucchini to the bowl with the chicken.
Drizzle the extra virgin olive oil and lemon juice over the mixture, then sprinkle with dried oregano, garlic powder, sea salt, and black pepper.
Toss everything thoroughly until the chicken and vegetables are evenly coated with the oil and seasonings.
Spread the mixture in a single layer on the prepared baking sheet, ensuring enough space for even roasting.
Roast for 18-22 minutes, or until the chicken is cooked through and the vegetables are tender and slightly caramelized.
Remove from the oven and serve immediately, optionally garnishing with fresh parsley or an extra squeeze of lemon.