Creating a delicious Chicken Cordon Bleu Stromboli is easy when you follow these simple steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C). Line a baking sheet with parchment paper.
2. Prepare Chicken: In a bowl, mix the cooked and shredded chicken with Dijon mustard, garlic powder, onion powder, salt, and pepper. If using, add chopped parsley for freshness.
3. Roll Out Dough: On a floured surface, roll out the pizza dough into a rectangle shape, about 12×18 inches.
4. Layer Ingredients: Lay the slices of ham evenly over the dough, leaving a small border around the edges. Place the Swiss cheese slices on top of the ham.
5. Add Chicken Mixture: Spread the seasoned chicken mixture evenly over the cheese layer.
6. Roll the Dough: Starting from one long side, carefully roll the dough away from you, pressing gently as you go to keep the filling compact.
7. Sealing the Ends: Pinch the ends of the rolled dough to seal. You can tuck them under slightly for a neat appearance.
8. Brush with Egg Wash: Place the rolled stromboli on the prepared baking sheet. Brush the top with the beaten egg for a golden finish.
9. Make Slits: Use a sharp knife to make a few diagonal slits on top of the dough for steam to escape.
10. Bake: Place the stromboli in the preheated oven and bake for 25-30 minutes or until golden brown.
11. Let It Cool: Once baking is complete, remove from the oven and allow it to cool for about 5-10 minutes before slicing.

By following these steps, you’ll create a magnificent Chicken Cordon Bleu Stromboli that is sure to impress!