Place the diced potatoes in a small pot of water, bring to a boil, and parboil for 5 minutes until slightly tender, then drain.
Heat the olive oil in a large cast-iron skillet over medium-high heat.
Add the ground beef to the skillet, breaking it apart with a spatula, and cook until browned and no longer pink.
Stir in the diced onions and bell peppers, cooking for 3-4 minutes until softened.
Add the parboiled potatoes to the skillet along with the sea salt, black pepper, garlic powder, and smoked paprika.
Press the mixture down with the spatula and cook undisturbed for 5 minutes to allow the potatoes to become crispy and golden.
Create a small well in the center of the hash and crack the egg into it, cooking until the white is set but the yolk remains runny.
Garnish with freshly chopped parsley and serve immediately directly from the skillet.