Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper.
Peel and cube the sweet potato into 1/2-inch pieces, then place them on one side of the sheet pan.
Drizzle the sweet potatoes with 0.5 tbsp of olive oil and a pinch of sea salt, then roast for 10 minutes.
While the potatoes are pre-roasting, mince the garlic and combine it in a small bowl with the remaining olive oil, rosemary, thyme, salt, and pepper.
Rub the herb and garlic mixture evenly over the chicken breast.
Remove the pan from the oven, move the potatoes to one side, and add the chicken breast, trimmed asparagus, and cherry tomatoes to the empty space.
Return the pan to the oven and roast for an additional 20-25 minutes, or until the chicken reaches an internal temperature of 165°F.
Remove from the oven and let the chicken rest for 5 minutes before slicing to ensure it stays juicy.