Bring a large pot of water to a boil and season generously with sea salt.
Cook the chickpea pasta according to package directions until al dente, reserving 0.25 cup of the pasta water before draining.
While the pasta cooks, whisk the whole egg, egg whites, and grated parmesan cheese together in a small bowl until smooth.
Place a large skillet over medium heat and add the diced pancetta, cooking until it becomes golden and crispy.
Add the minced garlic to the skillet with the pancetta and sauté for 30 seconds until fragrant, being careful not to burn it.
Turn the heat to low and add the cooked pasta to the skillet, tossing it to coat in the pancetta fat.
Remove the skillet from the heat entirely; this is crucial to prevent the eggs from scrambling.
Slowly pour the egg and cheese mixture over the pasta while tossing constantly with tongs.
Add a splash of the reserved pasta water as needed to create a creamy, glossy sauce that coats every strand.
Finish with freshly cracked black pepper and serve immediately.