Bring a large pot of water to a boil, season with sea salt, and cook the spaghetti until al dente.
While the pasta cooks, dice the pancetta and sauté in a large skillet over medium heat until crispy.
Add the minced garlic to the skillet and cook for 1 minute until fragrant, then remove from heat.
In a medium bowl, whisk together the whole egg, egg yolk, liquid egg whites, grated parmesan, and black pepper.
Drain the pasta, reserving 2 tablespoons of the starchy cooking water.
Add the hot pasta and reserved water to the skillet with the pancetta, tossing to coat.
Working quickly off the heat, pour the egg mixture over the pasta and stir constantly until the sauce thickens into a silky coating.