Bucatini with Clams and Scallops

Name: Bucatini with Clams and Scallops
Ingredients: Kosher salt; 12 ounces bucatini or spaghetti; 1/4 cup extra-virgin olive oil, plus more for drizzling; 4 cloves garlic, sliced; 1/4 to 1/2 teaspoon red pepper flakes; 1 10-ounce can whole shelled baby clams, drained (juice reserved); 8 ounces bay scallops, thawed if frozen; 1 teaspoon finely grated lemon zest, plus the juice of 1 lemon; 1/2 cup chopped fresh parsley; 1/4 cup grated parmesan cheese, plus more for topping Freshly ground pepper