Preheat oven to 375ºF.
For breadcrumb topping, heat oil in a small pan, about 2 tablespoons. Melt butter and add anchovies. Melt anchovies into oil and butter over medium heat; add garlic and turn down heat to medium low. Stir 1 minute then add breadcrumbs and stir until deeply golden brown. Transfer to a bowl and cool. Combine with parsley, cheese and season with black pepper.
For the clams, arrange bacon on a slotted baking sheet and bake to crisp, 15-18 minutes. Cool and chop. Raise oven temp to 425ºF.