Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Mince the garlic cloves and finely chop the fresh rosemary and thyme leaves.
Scrub the sweet potato and cut it into 1-inch thick wedges, keeping the skin on for extra fiber.
In a small bowl, whisk together the extra virgin olive oil, minced garlic, chopped herbs, sea salt, and black pepper.
Place the chicken breast, sweet potato wedges, and broccoli florets on the prepared baking sheet in a single layer.
Drizzle the herb-oil mixture over the chicken and vegetables, using a brush or clean hands to ensure everything is evenly coated.
Roast for 20 to 25 minutes, or until the chicken is cooked through to an internal temperature of 165°F and the potatoes are tender.
Remove from the oven and finish with a bright squeeze of fresh lemon juice over the tray before serving.