Preheat the oven to 400?F.
Butter an 8 X 11 1/2-inch (or 2 quart) baking dish.
Mix together the pepper and salt and season the chicken breasts. Divide the garlic slices into 4 equal portions. Lay the breasts, skin side down, in the pan and place the garlic in the center of each breast. Put 1/4 cup of the oyster dressing on each breast, then carefully fold together, bringing the bottom end of the breast up to the wing section. Drizzle with the lemon juice and sprinkle with the rosemary leaves. Bake for 45 minutes.
To serve, spoon the pan drippings over the breasts.
Yield: 4 servings