Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Peel and cube the sweet potato into 1/2-inch pieces, then mince the garlic cloves.
In a small bowl, whisk together the olive oil, minced garlic, rosemary, thyme, sea salt, and black pepper.
Place the chicken breast and cubed sweet potatoes on the prepared baking sheet, drizzling the herb oil over both and tossing to coat evenly.
Roast in the oven for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F and the potatoes are tender and golden.
While the chicken roasts, steam the broccoli florets for 5 minutes until they are bright green and fork-tender.
Remove the chicken from the oven and let it rest for 5 minutes before slicing.
Plate the sliced chicken alongside the roasted sweet potatoes and steamed broccoli for a clean, nutrient-dense dinner.