Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Pat the chicken breast dry with paper towels to ensure a good sear and place it on one side of the baking sheet.
Trim the woody ends off the asparagus and thinly slice the carrots into rounds.
In a small bowl, whisk together the olive oil, lemon juice, minced garlic, rosemary, thyme, sea salt, and black pepper.
Drizzle half of the herb oil mixture over the chicken breast, rubbing it in to coat all sides.
Place the asparagus and carrots on the other side of the baking sheet and toss them with the remaining herb oil mixture.
Roast in the oven for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are tender-crisp.
Let the chicken rest for 5 minutes before slicing to keep the juices intact, then serve immediately with the roasted vegetables.