Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Mince the garlic cloves and finely chop the fresh rosemary and thyme.
Peel and cube the sweet potato into half-inch pieces and cut the broccoli into small florets.
In a small bowl, whisk together the olive oil, minced garlic, rosemary, thyme, salt, and pepper.
Place the chicken breast, sweet potato cubes, and broccoli florets on the prepared baking sheet.
Drizzle the herb oil over the chicken and vegetables, tossing them to ensure everything is evenly coated.
Roast in the oven for 20 to 25 minutes until the chicken is cooked through and the vegetables are golden.
Allow the chicken to rest for 5 minutes before slicing to ensure it remains juicy and flavorful.