01 - Bring a large pot of salted water to a rolling boil and cook spaghetti according to package instructions until al dente. Reserve 1 cup pasta water and drain.
02 - In a large skillet over medium heat, cook pancetta until golden and crisp, about 4 to 6 minutes. Remove from heat.
03 - In a mixing bowl, vigorously whisk together eggs and grated Parmesan until smooth and well combined.
04 - Quickly add hot drained pasta to the skillet with pancetta. Remove skillet from heat, then immediately pour in the egg and cheese mixture. Toss energetically, gradually adding reserved pasta water if necessary to achieve a silky sauce. Season generously with freshly ground black pepper.