Combine pepperoni, olives, parsley, mozzarella cheese, flour, and garlic.
Place breaddough seam sides up, cut lengthwise, open up and sprinkle with a little flour to keep from sticking. Roll and create a well to put in filling.
Spoon mixture in well. Gather up edges and seal. Braid dough leaving an opening in the center of the twist.
Brush egg white and seasonings on twist. Sprinkle Parmesan cheese. Bake 30 minutes. Slice and serve. Dip slices in pizza sauce.