Preparation:

Step 1: Preheat the Oven

1. Preheat your oven to 425°F (220°C).
2. Line a baking sheet with parchment paper or lightly grease it to prevent sticking.

Step 2: Prepare the Dough

1. On a lightly floured surface, roll out the pizza dough into a large rectangle (about 10×14 inches).
2. Ensure the dough is evenly rolled out to avoid uneven baking.

Step 3: Layer the Fillings

1. Begin by layering the salami slices evenly across the dough, leaving a 1-inch border around the edges.
2. Add the pepperoni and capicola slices on top of the salami.
3. Lay down the provolone cheese slices, followed by the shredded mozzarella cheese.
4. Sprinkle the Italian seasoning and fennel seeds evenly over the fillings for added flavor.

Step 4: Roll the Dough

1. Starting from one long side, tightly roll the dough into a log.
2. Pinch the seams and ends to seal the Stromboli securely. This prevents the filling from leaking during baking.

Step 5: Apply the Egg Wash

1. Place the rolled Stromboli seam-side down on the prepared baking sheet.
2. Brush the top and sides with beaten egg to create a golden, glossy crust.
3. Sprinkle grated Parmesan cheese over the top for extra flavor.

Step 6: Bake the Stromboli

1. Bake the Stromboli in the preheated oven for 25-30 minutes, or until it is golden brown and cooked through.
2. Remove from the oven and let it cool for 5 minutes before slicing.