Combine the flour, salt, pepper, and garlic powder in a medium bowl, set aside. Dip the frog legs into the buttermilk. Then dredge them in the flour. Add 2 inches of oil to a medium pan and heat to 375 degrees F. Cook the frog legs in batches to not overcrowd the pan for 1 to 2 minutes per side. Drain on a paper towel lined plate. Keep warm in a 325 degree F oven until you are ready to serve. Serve with lemon wedges.