Bring a large pot of water to a boil, add plenty of salt. Add the pasta of choice to the boiling water and cook to "al dente" according to package instructions. Over cooking will cause dish to be mushy and pasta to break. Reserve 1 1/4 cups of the cooking water before draining the pasta. Drain remaining and set aside. 

While the pasta is cooking, add the chopped bacon to a large skillet and cook over med-high heat until crispy, about 5 minutes. Add in the shallots and tomatoes and cook until tomatoes begin to burst, about 7 minutes. If your bacon is extra fatty, remove a tablespoon or so of the drippings.

In a medium bowl, whisk together the eggs, cheese, lemon zest and 1 tsp of pepper. Slowly whisk in 1 cup of the reserved pasta water. Set aside.

Turn the tomato-bacon mixture down to medium-low, and toss in the cooked pasta. Slowly pour the egg and cheese mixture, and stir to make a creamy sauce, about 1 minute. Season with salt and pepper. If needed, add another 1/4 cup of the pasta water to loosen up the sauce. Stir in the torn basil. Top each serving with more grated parm or romano cheese, and season with pepper.