Preheat the oven to 350 degrees F. Line a baking sheet with parchment paper and spray with nonstick spray.
Cut the pizza dough widthwise into 8 strips. Using your palms, roll each strip against the counter to create an even log about 18 inches long. Fold the log into the shape of a pretzel, twisting the ends together at the center. Repeat with the remaining strips of dough.
In a large mixing bowl, combine the baking soda with 2 cups warm water. Using a slotted spatula, lower a pretzel into the baking soda solution and lift out, allowing any excess to drip off. Slide the pretzel onto the baking sheet. Repeat with remaining pretzels.
In a small bowl, combine the Parmesan, oregano, sesame seeds, garlic powder, salt and red pepper flakes. Sprinkle generously over the pretzels.
Bake the pretzels until deeply golden brown, 18 to 20 minutes. Garnish with additional Parmesan and serve warm with marinara sauce for dunking.