Bring a pot of salted water to a boil and cook the chickpea pasta according to package directions until al dente.
While the pasta cooks, finely dice the chicken breast and pancetta into small, uniform pieces.
In a small bowl, whisk together the whole egg, egg yolk, grated parmesan cheese, and black pepper until the mixture is smooth.
Heat a large skillet over medium heat and sauté the pancetta until the fat renders and the edges become crispy.
Add the diced chicken and minced garlic to the skillet, cooking until the chicken is golden and cooked through.
Reserve 0.25 cup of the starchy pasta water, then drain the pasta and add it directly to the skillet with the meat.
Remove the skillet from the heat immediately to ensure the egg mixture does not scramble upon contact.
Pour the egg and cheese mixture over the pasta, tossing vigorously while adding a splash of reserved pasta water until a creamy sauce forms.
Season with sea salt and serve immediately while the sauce is glossy and warm.