Preheat oven to 400.
Mix chicken with cream cheese, yogurt, dill, onion, and celery.
Make Stromboli Dough and divide the dough into 6 pieces.
On parchment paper, roll each piece into an approximately 6 inch circle.
Place approximately 2 Tablespoons of chicken mixture in the middle of each circle.
Pull up the edges of the dough and seal at the top (see video above for a photo).
Place on a parchment lined cookie dough sheet (I used my silicone mat).
Brush the tops of the bundles with beaten egg.
Sprinkle the tops of the bundles with the grated parmesan cheese and a sprinkle of extra dill.
Bake for 15 minutes, or until tops begin to turn golden brown.