Peel and dice the sweet potato into small 1/2-inch cubes to ensure even cooking and maximum crispiness.
Heat the olive oil in a large cast-iron skillet over medium-high heat until the oil is shimmering.
Add the diced sweet potatoes to the skillet, spreading them in a single layer to develop a golden-brown exterior.
Cook the potatoes for 8-10 minutes, stirring only occasionally, until they are tender and crispy.
Add the diced onion and bell pepper to the skillet, sautéing for 3-4 minutes until the vegetables soften and become fragrant.
Push the vegetables to the edges of the pan and add the ground beef to the center.
Break the beef apart with a spatula and season with smoked paprika, garlic powder, sea salt, and black pepper.
Cook the beef until fully browned and no pink remains, then toss everything together to combine flavors.
Garnish the hash with fresh chopped parsley and serve immediately while hot.