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 leaves.
Peel the carrots and slice them into 1/2-inch thick rounds, then break the broccoli into bite-sized florets.
In a large mixing bowl, combine the chicken thighs, broccoli, and carrots.
Drizzle with extra virgin olive oil and sprinkle with the minced garlic, rosemary, oregano, sea salt, and black pepper.
Toss everything thoroughly until the chicken and vegetables are evenly coated in the oil and seasonings.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the chicken pieces are not overlapping.
Roast in the center of the oven for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are tender with slightly caramelized edges.
Remove from the oven and let the chicken rest for 5 minutes before serving to keep it juicy.