Season the chicken breast evenly on both sides with the sea salt and black pepper.
Heat the olive oil in a large stainless steel or cast iron skillet over medium-high heat until shimmering.
Place the chicken in the skillet and sear for 6 to 8 minutes per side until the exterior is golden brown and the internal temperature reaches 165°F.
While the chicken is searing, steam the asparagus spears for 3 to 5 minutes until they are vibrant green and crisp-tender.
Remove the chicken from the pan and let it rest on a plate for 3 minutes; reduce the skillet heat to medium.
Add the minced garlic to the remaining oil in the skillet and sauté for 30 seconds until fragrant.
Whisk in the lemon juice, lemon zest, parsley, and thyme, scraping up any browned bits from the bottom of the pan to incorporate into the sauce.
Plate the cooked quinoa, top with the rested chicken breast, and drizzle the warm lemon-herb sauce over the top with the asparagus on the side.