Bring a large pot of salted water to a boil and cook the chickpea spaghetti according to package directions until al dente.
While the pasta cooks, place the diced pancetta in a large skillet over medium heat and cook until crispy and golden brown.
Add the minced garlic and spiralized zucchini to the skillet with the pancetta, sautéing for 2 minutes until the zucchini is slightly softened.
In a small bowl, whisk together the large egg, egg whites, grated parmesan cheese, and black pepper until well combined.
Reserve 1/4 cup of pasta water, then drain the pasta and immediately add it to the skillet with the pancetta and zucchini.
Remove the skillet from the heat and quickly pour in the egg mixture, tossing constantly to create a smooth, creamy sauce without scrambling the eggs.
Thin the sauce with a splash of reserved pasta water if needed and serve immediately with an extra crack of black pepper.