Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Pat the chicken breast dry with a paper towel to ensure the herbs stick, then place it on one side of the baking sheet.
In a small bowl, whisk together the olive oil, minced garlic, dried rosemary, dried thyme, sea salt, and black pepper.
Brush half of the herb oil mixture over the chicken breast, coating both sides evenly.
Place the chicken in the oven and roast for 10 minutes.
While the chicken is roasting, trim the woody ends from the asparagus and toss the spears with the remaining herb oil.
Remove the baking sheet from the oven, arrange the asparagus in a single layer next to the chicken, and squeeze the fresh lemon juice over the entire tray.
Return the sheet to the oven and roast for 10 to 12 more minutes until the chicken is cooked through and the asparagus is tender-crisp.
Let the chicken rest for 5 minutes before slicing, then serve immediately over the warm cooked quinoa.