Preheat the oven to 440 °F. Prepare the potatoes by making 6-7 wedges per piece. Spray the baking pan lightly with oil. In the baking pan, place potatoes, and garlic. Add water, oil, oregano, and lemon juice. Sprinkle pepper and salt, and toss to combine the mixture. Bake it in the preheated oven for 40 minutes.