Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Peel and dice the sweet potato and carrots into 1/2-inch cubes to ensure they roast evenly.
Mince the garlic clove finely and set aside.
In a large mixing bowl, combine the chicken breast, sweet potato cubes, carrots, and broccoli florets.
Drizzle the extra virgin olive oil over the mixture and sprinkle with dried rosemary, dried thyme, sea salt, black pepper, and minced garlic.
Toss the ingredients thoroughly until the chicken and vegetables are well-coated in the herb oil.
Spread the mixture in a single layer on the prepared baking sheet, making sure not to overcrowd the pan.
Roast for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the sweet potatoes are tender and golden brown.