Peel the sweet potato and dice into small 1/2-inch cubes to ensure even and quick cooking.
Heat the olive oil in a large skillet over medium heat.
Add the sweet potato cubes to the skillet, cover with a lid, and cook for 8-10 minutes until tender, stirring occasionally to prevent sticking.
Remove the lid, increase the heat to medium-high, and add the diced yellow onion and red bell pepper.
Sauté the vegetables for 3-4 minutes until the onions are translucent and the peppers have softened.
Push the vegetables to the edges of the skillet and add the ground beef to the center, breaking it into small crumbles with a spatula.
Sprinkle the garlic powder, smoked paprika, sea salt, and black pepper over the beef and vegetables.
Cook for 5-7 minutes, stirring frequently, until the beef is fully browned and the sweet potatoes have developed a golden, caramelized exterior.
Remove from heat and garnish with freshly chopped parsley before serving.