Creating this flavorful meal is straightforward. Follow these simple steps:

1. Preheat Oven: Preheat your oven to 400°F (200°C).
2. Prepare Chicken: Season the chicken thighs with salt, pepper, and oregano.
3. Mix Marinade: In a small bowl, combine the minced garlic, lemon juice, lemon zest, and olive oil.
4. Combine Ingredients: In a large baking dish, add the halved red potatoes and green beans. Drizzle with half of the marinade and toss to coat.
5. Add Chicken: Place the seasoned chicken thighs on top of the vegetables. Pour the remaining marinade over the chicken.
6. Bake: Cover the dish with foil and bake for 25 minutes.
7. Uncover and Finish: Remove the foil and bake for an additional 15-20 minutes, or until the chicken is golden brown and reaches an internal temperature of 165°F (75°C).
8. Serve: Allow to rest for a few minutes, garnish with fresh parsley if desired, and serve warm.

These steps make it easy to prepare this incredible meal, allowing for great flavors to meld together.