Preheat you oven to 400 degrees F.In a small bowl, mix together the first four ingredients. Set aside.Place your potatoes in a large lightly-oiled baking dish, then sprinkle with the spice mix. Toss potatoes together to coat with spices.In another bowl, whisk together your garlic, olive oil, lemon juice and broth. Pour it into the baking dish with potatoes.Cover the baking dish with foil and place in the 400 degree pre-heated oven for 40 minutes.Remove from oven briefly. Uncover and sprinkle Parmesan cheese on the potato wedges. Return to oven uncovered to roast for another 10-15 minutes or until potatoes are cooked through to your liking and have turned crispy on the outside.Remove potatoes from the oven and sprinkle with fresh parsley and capers (optional) before serving.