Bring a large pot of water to a boil and season with the sea salt.
Cook the chickpea pasta according to package directions until al dente, reserving 0.5 cup of the pasta water before draining.
While the pasta cooks, whisk together the whole egg, egg yolks, egg white, and finely grated Pecorino Romano in a small bowl until smooth.
Heat the olive oil in a large skillet over medium heat and add the pancetta, sautéing until the fat has rendered and the meat is golden and crispy.
Add the cooked pasta and the black pepper to the skillet with the pancetta, tossing for 1 minute to coat each strand in the oil.
Remove the skillet from the heat entirely to prevent the eggs from scrambling.
Slowly whisk 2 tablespoons of the hot pasta water into the egg and cheese mixture to temper it.
Pour the egg mixture over the pasta, tossing vigorously and adding more pasta water 1 tablespoon at a time until a creamy, glossy sauce forms.
Serve immediately with an extra sprinkle of black pepper.