Fry the bacon in a large nonstick stockpot over medium heat until slightly crisp. Add the onions, celery, carrots, salt, cayenne, and bay leaves and cook, stirring, until the vegetables are soft and tender, about 10 minutes. Add the flour and stir to blend. Cook until golden, about 10 minutes, stirring occasionally. Add the chicken stock and bring to a boil. Add the potatoes and simmer until they are fork-tender, about 15 minutes. Add the half-and-half and parsley and simmer for 5 minutes.
Add the oysters with their liquor, the Tabasco, and Worcestershire. Simmer until the edges of the oysters curl, about 2 minutes. Do not overcook the oysters. Remove the bay leaves and serve hot with the tuiles on the side.
Yield: 10 servings