Whisk eggs, parmesan cheese and black pepper in a bowl. Set aside.
Cook pancetta over medium heat until crisp. Remove from the pan and add garlic. Cook for 1 minute.
Cook pasta in salted water until al dente. Drain, reserving 1 cup of pasta water. Place hot pasta in pan with garlic and toss to coat. Quickly remove from heat and add egg mixture.
Using tongs, mix well adding pasta water if needed. Stir in pancetta/bacon and add parsley/parmesan for garnish.