Preheat your oven to 425°F (220°C) and line a rimmed baking sheet with parchment paper.
Pat the chicken thighs thoroughly dry with paper towels; removing moisture is the secret to achieving that golden, crispy skin.
In a small ramekin, combine the olive oil, minced rosemary, thyme, sea salt, and black pepper.
Rub the herb oil mixture evenly over the chicken thighs, ensuring the skin is well-coated.
Place the chicken on the baking sheet and roast for 20 minutes.
While the chicken is roasting, snap the woody ends off the asparagus and mince the garlic clove.
Carefully remove the pan from the oven, add the asparagus and garlic to the pan, and toss them in the rendered chicken fat.
Return the pan to the oven for another 10 to 12 minutes until the chicken reaches an internal temperature of 165°F and the asparagus is tender.
Finish the dish by squeezing the fresh lemon juice over the chicken and vegetables before serving.