Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Scrub the potato and cut it into 1-inch cubes, then peel and slice the carrots into half-inch rounds.
Place the chicken breast, potato cubes, carrots, and broccoli florets into a large mixing bowl.
Drizzle with olive oil and add the minced garlic, dried rosemary, dried thyme, sea salt, and black pepper.
Toss the ingredients thoroughly until the chicken and vegetables are evenly coated in the oil and herbs.
Arrange everything in a single layer on the prepared baking sheet, ensuring the chicken has enough space to roast properly.
Bake for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the potatoes are golden and tender.
Remove the tray from the oven and let the chicken rest for 5 minutes before slicing to ensure it stays moist and flavorful.