Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Mince the garlic cloves and finely chop the fresh rosemary and thyme leaves, discarding the woody stems.
Slice the sweet potato into 1-inch thick wedges and trim the tough, woody ends off the asparagus spears.
In a small mixing bowl, whisk together the extra virgin olive oil, minced garlic, rosemary, thyme, sea salt, and black pepper.
Place the chicken breast, sweet potato wedges, and asparagus in a single layer on the prepared baking sheet.
Drizzle the garlic-herb oil mixture over the chicken and vegetables, using a brush or clean hands to ensure everything is evenly coated.
Roast in the center of the oven for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the sweet potatoes are fork-tender.
Remove from the oven and finish with a bright squeeze of fresh lemon juice over the entire tray before serving.