Bring a large pot of salted water to a boil and cook the chickpea pasta according to package directions until al dente.
While the pasta cooks, heat the olive oil in a large skillet over medium heat and sauté the diced pancetta until it is golden brown and crispy.
In a small bowl, whisk together the whole egg, egg yolk, Greek yogurt, grated Pecorino Romano, and black pepper until the mixture is smooth and creamy.
Before draining the pasta, reserve about 0.25 cup of the starchy pasta cooking water.
Drain the pasta and immediately add it to the skillet with the pancetta, tossing to coat the noodles in the rendered fat.
Remove the skillet from the heat entirely to prevent the eggs from scrambling, then pour in the egg and yogurt mixture.
Quickly toss the pasta, adding the reserved pasta water a tablespoon at a time, until a silky and glossy sauce forms that coats every strand.
Season with sea salt if needed and serve immediately while the sauce is warm and luscious.