Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Wash and dice the Russet potato into small 1/2-inch cubes, ensuring they are uniform for even roasting.
In a bowl, toss the potato cubes with half of the olive oil, a pinch of sea salt, and the smoked paprika.
Spread the potatoes on the baking sheet and roast for 20-25 minutes, flipping halfway through, until they are golden and crispy.
While the potatoes roast, heat the remaining olive oil in a large cast-iron or stainless steel skillet over medium-high heat.
Add the ground beef, diced yellow onion, and diced red bell pepper to the skillet, breaking the meat apart with a wooden spoon.
Season the beef mixture with garlic powder, black pepper, and the remaining sea salt, cooking until the beef is browned and slightly crispy at the edges.
Once the potatoes are finished roasting, add them directly into the skillet with the beef and toss to combine.
Garnish with freshly chopped parsley and serve immediately while hot.