Preheat oven to 400 degrees F.
On a lightly oiled piece of parchment or silicone baking mat on a baking sheet, pat dough out into a rectangle 9"x12".
Leaving a 1/2 boarder on one long side, place pepperoni evenly over one half of the dough, going the long way. Using the parchment, fold dough over filling lining up edges. Brush dough lightly with whisked egg. Mix together Italian seasoning and salt. Sprinkle seasoning generously over the egg wash.
Using a kitchen shear or pizza cutter, slice dough into 12 even strips starting at the folded edge. Pick up dough and twist twice so that each end has the seasoning face up and the uncoated part of the twist is in the center. Place back on the parchment or silicone mat leaving about 2 inches between twists. Continue with dough until all dough is twisted and on the baking sheet.
Bake in a preheated 400 degree F oven for 15 minutes, turning partway through baking time. Serve with warmed marinara sauce for dipping.