Preheat oven to 400°F and arrange potatoes in a cast iron skillet.
Season the wedges with garlic powder, salt, and pepper.
Combine broth, olive oil, lemon juice, zest, and oregano in a bowl. Pour over potatoes.
Roast for 25 minutes, turn potatoes, and roast for another 25 minutes.
Drain the excess liquid in the skillet and return to the oven for another 5 minutes.
Garnish with fresh oregano, drizzle with reserved cooking liquid, and serve.