1. Add potato and water to a large microwave safe dish and cover. Microwave on high for 3-4 minutes, or just until potatoes are crisp tender, but not mushy. Do not over cook.
2. Meanwhile, heat olive oil in a large cast iron skillet over medium heat. Add red pepper and onion and sprinkle with garlic powder and smoked paprika. Season with salt and black pepper, to taste, and stir to combine.
3. Cook, stirring frequently, until the pepper and onion soft are soft and a bit brown.
4. Drain excess moisture from the potatoes and pat dry. Transfer to the skillet and season with additional salt and black pepper, as desired. Cook, stirring occasionally, until the potatoes are golden brown and slightly crispy, approximately 6-7 minutes. Season with additional salt and black pepper, if desired.
5. Remove from heat and sprinkle freshly grated Parmesan cheese on top of the warm potatoes. Cover just until the cheese melts and serve.