In a large skillet over medium-high heat, add a drizzle of olive oil. Once hot, add the ground beef, breaking it apart with a spatula. Season with salt, pepper, and smoked paprika. Cook until browned, about 5-7 minutes. Drain excess fat if necessary.
Push the beef to one side of the skillet. Add the sliced onion and bell peppers to the other side. Sauté for about 3-5 minutes until tender, then mix them with the beef. Add the minced garlic and Worcestershire sauce, stirring to combine. Cook for another 2 minutes until fragrant.
Lower the heat to medium-low. Place the provolone cheese slices over the beef and vegetable mixture, allowing them to melt for 2-3 minutes. Alternatively, you can cover the skillet to help the cheese melt faster.
While the cheese is melting, lightly toast the hoagie rolls in a separate pan or under the broiler until golden brown.
Once the cheese has melted, divide the mixture among the toasted hoagie rolls.
Sprinkle with chopped parsley for a touch of color and freshness. Serve immediately while hot.
Notes
Serve immediately for the best flavor and texture.