Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Pat the chicken breast completely dry with a paper towel to ensure the skin or surface becomes extra crispy during roasting.
In a small bowl, whisk together half of the extra virgin olive oil, sea salt, black pepper, dried oregano, and garlic powder.
Rub the herb and oil mixture thoroughly over all sides of the chicken breast.
In a separate bowl, toss the broccoli florets and sliced carrots with the remaining olive oil and a pinch of salt until evenly coated.
Place the seasoned chicken breast and the vegetable medley onto the prepared baking sheet in a single layer.
Roast in the center of the oven for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are tender-crisp.
Remove from the oven and immediately squeeze the juice of the fresh lemon over the chicken and roasted vegetables.
Allow the chicken to rest for 5 minutes before slicing and serving over a bed of warm, fluffy quinoa.