Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Cut the boneless, skinless chicken breast into 1-inch cubes and slice the zucchini and carrots into even rounds.
In a large mixing bowl, whisk together the extra virgin olive oil, fresh lemon juice, minced garlic, dried rosemary, dried thyme, sea salt, and black pepper.
Add the chicken cubes, broccoli florets, zucchini rounds, and carrot slices to the bowl, tossing thoroughly until every piece is coated in the herb marinade.
Spread the chicken and vegetable mixture in a single, even layer across the prepared sheet pan to ensure proper roasting.
Bake for 20 to 25 minutes, or until the chicken is cooked through and the vegetables are tender with slightly caramelized edges.