Preheat oven to 400 degrees. 1. Wash potatoes, pierce and microwave 4 to 5 minutes until partially softened. 2. Meanwhile, combine olive oil, garlic, rosemary, chili powder salt and pepper in a small bowl. 3. Spray a small rimmed baking sheet with oil. Cut an X across each potato partially through. Place potatoes on baking sheet and press each one with a metal spatula. Try to keep the potato from breaking apart. 4. Spoon about half of the oil mixture over the potatoes. Sprinkle with cheese. 5. Bake potatoes until crispy and golden, about 15 to 20 minutes. 6. Serve hot with remaining oil mixture.