Bring a pot of salted water to a boil and cook the chickpea pasta according to package directions until al dente.
Reserve 0.25 cup of the starchy pasta water before draining the noodles.
Heat the olive oil in a large skillet over medium heat and sauté the diced pancetta until the fat renders and it becomes crispy.
Add the diced chicken breast to the skillet with the pancetta and cook until browned and cooked through.
Stir in the minced garlic and cook for 30 seconds until fragrant, then turn the heat to low.
In a small bowl, whisk together the egg, grated parmesan cheese, and black pepper until well combined.
Add the cooked pasta to the skillet, tossing it with the chicken and pancetta to coat.
Remove the skillet from the heat entirely and quickly pour in the egg mixture, stirring constantly to create a creamy sauce without scrambling the eggs.
Gradually add the reserved pasta water one tablespoon at a time until the sauce reaches a silky, glossy consistency.
Season with sea salt and garnish with fresh chopped parsley before serving immediately.