Rinse clams with cold water and set aside.
Put tomatoes under broiler until they are blistered. Set aside.
Put pot on for pasta. Cook fettuccine while preparing clams. Usually takes 10 minutes for al dente, follow instructions on box.
Heat butter in large saute pan. Once the butter is hot and melted add garlic and shallots. Cook until translucent not browned.
Add wine and cook another few minutes. Add chicken stock, salt & pepper, pepper flakes, lemon zest, blistered tomatoes, and thyme strands. Stir and let come to a boil.
Add clams and cover for about 4-5 minutes. You will hear the clams pop open. Once they do, remove from flame. Remove and discard thyme sprigs. If any clams are unopened, discard them.
Drain pasta. Plate pasta and spoon clams and broth into bowls. Top with a few grinds of fresh parmesan. Mangia!