Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Pat the chicken breast dry with a paper towel and season both sides with half of the sea salt, black pepper, rosemary, and thyme.
Slice the carrots into thin rounds and break the broccoli into bite-sized florets.
In a large bowl, toss the broccoli, carrots, and minced garlic with olive oil and the remaining salt, pepper, and herbs.
Spread the vegetables onto the prepared baking sheet, leaving space in the center for the chicken.
Place the chicken breast in the center and squeeze the juice of half a lemon over the chicken and vegetables.
Roast for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are tender and slightly browned.
Remove from the oven and let the chicken rest for 5 minutes before slicing to ensure maximum juiciness.