1 tablespoon olive oil
6 ounces guanciale (salt-cured pork jowl), pancetta (Italian bacon), or slab bacon, thinly sliced, cut crosswise into 1/2-inch pieces
2 shallots, finely chopped
4 garlic cloves, thinly sliced
1 teaspoon freshly cracked black pepper
12 ounces bucatini or other long-strand pasta
Kosher salt
2 ounces Parmesan, grated, plus more
2 large egg yolks
1 teaspoon finely grated lemon zest, plus thinly sliced zest for serving
2 tablespoons fresh lemon juice