Steps
1. In a small bowl, mix olive oil, lemon juice, garlic powder, oregano, salt, and pepper.
2. Place the chicken breast in a resealable bag or shallow dish and pour the marinade over it. Let it marinate for at least 30 minutes.
3. Preheat the grill or a grill pan over medium-high heat.
4. Remove the chicken from the marinade and grill for about 6-7 minutes on each side, or until fully cooked through and the internal temperature reaches 165°F (75°C).
5. Remove from the grill and let rest for a few minutes.
6. Slice the chicken, garnish with fresh parsley, and serve.