01 - Preheat the oven to 400°F.
02 - Place the potato wedges in a large roasting pan, distributing them in a single even layer.
03 - In a mixing bowl, whisk together olive oil, lemon juice, minced garlic, broth, oregano, salt, pepper, and ground turmeric if using.
04 - Pour the marinade over the potatoes and toss thoroughly to ensure even coating. Arrange the potatoes mostly flat, cut side down.
05 - Roast uncovered for 40 minutes.
06 - Remove from oven, gently flip the potatoes, and spoon pan juices over the surface.
07 - Return the pan to the oven and roast for an additional 30 to 35 minutes, or until the potatoes are golden, crisp around the edges, and fork-tender.
08 - For added crispiness, set the oven to broil for the final 3 to 5 minutes, monitoring closely to prevent burning.
09 - Garnish potatoes with chopped fresh parsley and, if desired, lemon slices. Serve immediately while hot.