In a large skillet, fry potatoes in oil for 10 minutes. Add green pepper, onion and garlic; continue to cook for 25 minutes or until potatoes are browned and vegetables are tender. Stir in Spam; heat through. Cover and remove from the heat. In another greased skillet, combine eggs, salt and pepper. Cook and stir gently until eggs are set. Stir into potato mixture. Top with cheese; cover for 3 to 5 minutes or until cheese is melted. Serves 6 to 8.