Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Trim the woody ends off the asparagus and place the spears on the baking sheet.
Drizzle the asparagus with 0.5 tbsp of olive oil and season with half of the sea salt and black pepper.
Roast the asparagus for 12-15 minutes until they are crisp-tender and slightly charred at the tips.
While the vegetables roast, season the chicken breast evenly with the dried oregano and the remaining salt and pepper.
Heat the remaining 0.5 tbsp of olive oil in a medium skillet over medium-high heat.
Place the chicken in the skillet and sear for 6-7 minutes per side, or until the internal temperature reaches 165°F.
In the final 2 minutes of cooking, add the minced garlic, lemon juice, and lemon zest to the pan, basting the chicken with the pan juices.
Plate the cooked quinoa and top with the lemon-herb chicken, serving the roasted asparagus alongside for a complete, clean meal.