Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Chop the broccoli, red bell pepper, and zucchini into uniform bite-sized pieces.
Place the vegetables on the baking sheet, drizzle with half of the olive oil, and sprinkle with half of the sea salt and black pepper.
Toss the vegetables to coat evenly and roast in the oven for 18-20 minutes until tender and slightly charred.
While the vegetables roast, season the chicken breast on both sides with the dried oregano, garlic powder, and the remaining salt and pepper.
Heat the remaining olive oil in a medium skillet over medium-high heat.
Add the chicken to the skillet and cook for 6-7 minutes per side, or until the internal temperature reaches 165°F.
Remove the chicken from the heat and immediately drizzle with the fresh lemon juice.
Serve the zesty chicken alongside the golden roasted vegetables for a clean and satisfying meal.