Cut the beef steak into even 1-inch cubes. Season the beef cubes generously with black pepper, paprika, and salt, tossing them in a bowl to coat evenly.

Heat the olive oil in a large skillet over medium-high heat until it shimmers. Add the beef cubes in a single layer and sear for about 3 minutes without moving them. Stir and sear for another 2 to 3 minutes on each side until the beef reaches your desired doneness, about 8 to 10 minutes total. Transfer cooked beef to a plate and set aside.

In the same skillet, add the minced garlic and cook for about 30 seconds until fragrant. Add all the sliced bell peppers and onion to the pan and cook for 5 to 7 minutes, stirring occasionally until they soften slightly but still have some crunch.

Return the cooked beef to the skillet with the peppers and onions. Add the soy sauce and butter, stirring everything together over medium heat for 2 to 3 minutes until the butter melts and everything is coated in a glossy, savory sauce. Taste and adjust seasoning as needed.

While the beef and peppers finish cooking, prepare the French fries according to package directions until golden brown and crispy. Divide the crispy fries among serving bowls or plates and top generously with the steak pepper mixture and all the flavorful pan juices.