Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Mince the garlic cloves and finely chop the fresh rosemary and thyme leaves, discarding the woody stems.
Prep the vegetables by slicing the carrots into thin rounds and the zucchini into half-moons so they roast at the same rate as the broccoli.
In a large mixing bowl, combine the chicken breast, broccoli florets, sliced carrots, and zucchini.
Drizzle the extra virgin olive oil over the chicken and vegetables, then sprinkle with the minced garlic, chopped herbs, sea salt, and black pepper.
Toss everything thoroughly with your hands or tongs until every piece is evenly coated in the oil and seasonings.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the pieces are not overcrowded to allow for proper browning.
Roast for 20 to 25 minutes, or until the chicken is cooked through to an internal temperature of 165°F and the vegetables are tender and slightly caramelized.
Remove from the oven and immediately drizzle with fresh lemon juice to brighten the herbal flavors before serving hot.