Creating your Chicken Cordon Bleu Stromboli is a breeze if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper.
2. Cook Chicken: In a skillet over medium heat, heat the olive oil and add the chicken breasts. Season with garlic powder, onion powder, paprika, salt, and pepper. Cook until golden brown and the internal temperature reaches 165°F (74°C). Let cool, then shred or chop.
3. Roll the Dough: On a lightly floured surface, roll out the pizza dough into a rectangular shape, about ¼ inch thick.
4. Spread Mustard: Spread a thin layer of Dijon mustard over the dough, leaving about an inch border around the edges.
5. Layer the Ingredients: Evenly place the shredded chicken, ham slices, Swiss cheese, and mozzarella cheese over the mustard-covered dough.
6. Roll It Up: Starting from one edge, roll the dough tightly into a log, ensuring the fillings stay inside. Pinch the ends to seal it well.
7. Prepare for Baking: Place the Stromboli seam side down on the prepared baking sheet. Brush the top with the beaten egg for a shiny finish.
8. Cut Slits: Use a sharp knife to make a few diagonal slits on top of the Stromboli to allow steam to escape.
9. Bake: Bake in the preheated oven for about 25-30 minutes, or until the Stromboli is golden brown and cooked through.
10. Cool: Once baked, remove from the oven and let it cool slightly before slicing.
11. Garnish: Optionally, sprinkle chopped parsley on top for added color and freshness.

By following these easy steps, you’ll have an entire Chicken Cordon Bleu Stromboli ready to be devoured in no time!