In a small bowl, whisk together 1 tablespoon of olive oil, lemon juice, minced garlic, oregano, thyme, salt, and pepper to create the marinade.
Place the chicken breast in a shallow dish or reusable bag, pour the marinade over it, and let it sit for at least 20 minutes in the refrigerator.
Preheat your grill or grill pan to medium-high heat.
Trim the woody ends off the asparagus and toss the spears with the remaining 0.5 tablespoon of olive oil and a small pinch of salt.
Place the chicken on the grill and cook for 6 to 7 minutes per side, or until the internal temperature reaches 165°F.
During the last 5 minutes of chicken cooking, add the asparagus to the grill, turning occasionally until lightly charred and tender.
Remove the chicken from the heat and let it rest for 5 minutes before slicing to keep it juicy.
Serve the sliced chicken alongside the grilled asparagus for a clean, high-protein meal.