Preheat the Oven: Preheat your oven to 425°F (220°C).
Prepare the Marinade: In a small bowl, mix olive oil, minced garlic, lemon zest, lemon juice, oregano, salt, and pepper.
Marinate the Chicken: Place the chicken thighs in a large bowl or zip-top bag. Pour the marinade over the chicken, ensuring it’s well coated. Let it marinate for at least 15 minutes.
Arrange on Sheet Pan: On a large baking sheet, arrange the marinated chicken thighs skin side up. Scatter the trimmed green beans around the chicken. Drizzle any remaining marinade over the green beans.
Roast: Bake in the preheated oven for 30-35 minutes, or until the chicken is cooked through and the skin is crispy. The internal temperature of the chicken should reach 165°F (74°C).
Serve: Remove from the oven, garnish with fresh parsley and serve with lemon wedges on the side.