Wash and scrub the russet potato, then cut into small 1/2-inch cubes to ensure even cooking.
Heat the olive oil in a large cast-iron or non-stick skillet over medium-high heat.
Add the potato cubes to the skillet and cook for 8-10 minutes, stirring occasionally, until they are tender and the edges have turned golden brown.
Push the potatoes to the outer edges of the skillet and add the ground beef, diced onion, and diced red bell pepper to the center.
Cook the beef mixture for 5-6 minutes, breaking the meat apart with a wooden spoon, until the beef is fully browned and the vegetables are soft.
Sprinkle the garlic powder, smoked paprika, sea salt, and black pepper over the entire skillet.
Stir all ingredients together and continue to cook for another 3 minutes, allowing the beef to get slightly crispy and the flavors to meld.
Remove from heat, garnish with freshly chopped parsley, and serve immediately.