Peel and dice the russet potato into small 1/2-inch cubes to ensure even cooking.
Place the potato cubes in a microwave-safe bowl with a splash of water, cover, and steam for 3 minutes until slightly tender but not mushy.
Heat the olive oil in a large cast-iron or non-stick skillet over medium-high heat.
Add the ground beef to the skillet, breaking it into small crumbles with a wooden spoon, and cook until mostly browned.
Stir in the diced yellow onion and red bell pepper, sautéing for 3-4 minutes until the vegetables are softened.
Add the par-cooked potatoes to the skillet and season the entire mixture with sea salt, black pepper, garlic powder, and smoked paprika.
Press the hash down firmly with a spatula and cook undisturbed for 5 minutes to develop a crispy crust.
Toss the mixture and cook for another 3-5 minutes until the potatoes are golden and the beef is fully cooked through.
Serve immediately, optionally garnished with fresh parsley or a dash of hot sauce.