Cook the pasta to package directions. Reserve 1 cup of the cooking liquid.
While the pasta is cooking bake the bacon until desired level of crispiness. Bake the bacon with this recipe: https://marlameridith.com/recipe/perfectly-baked-bacon/
Reserve the bacon drippings, crumble bacon into small pieces.
In a bowl, combine the eggs, cheese, salt and pepper.
Create a double boiler with a 10 inch cast iron skillet over a medium sized soup pot. Fill the soup pot with 2 inches of water and bring to a boil. Place the skillet over the top and let it warm up. Place the pasta in the skillet and mix in the egg mixture, stirring consistently for about 2 minutes. The sauce will thicken and get creamy as you mix. Mix in 1/4 cup of the bacon drippings and the parsley. If you need to thin out the sauce, pour in some of the reserved pasta cooking liquid until you reach the desired consistency. Mix in 1/2 of the crumbled bacon.
Divide the pasta into 4 bowls, top with panko, parsley and more bacon.