Preheat your oven to 425°F (220°C) for roasting the asparagus.
In a small bowl, mix the lemon juice, olive oil, minced garlic, dried oregano, dried thyme, salt, and pepper.
Place the chicken breast in a shallow dish and pour half of the lemon herb mixture over it, marinating for at least 15 minutes.
Meanwhile, toss the asparagus with the remaining lemon herb mixture and arrange them on a baking sheet lined with parchment paper. Roast for about 12-15 minutes until tender and slightly crispy.
While the asparagus roasts, cook the quinoa according to the package instructions if not already prepared.
Heat a skillet over medium heat and cook the marinated chicken breast for about 5-7 minutes per side or until the internal temperature reaches 165°F (74°C).
Slice the chicken into strips.
Assemble the bowl by layering the cooked quinoa, sliced chicken, and roasted asparagus. Drizzle any remaining pan juices over the top if desired.