To make the dough, place the mozzarella and butter in a microwave-safe bowl and microwave for 1 to 2 minutes, until the cheese is entirely melted.
Stir well.
Add the egg and combine well using a hand mixer.
Add the almond flour and salt and combine well with the mixer.
Use your hands and work it like a traditional dough, kneading for about 3 minutes. (Note: If the dough is too sticky, chill it in the refrigerator for an hour or overnight.)
While the dough is chilling, make the filling: Melt the butter in a sauté pan over medium heat.
Add the celery, onions, herbs, and salt and cook until the veggies are soft, about 4 minutes.
Add the chicken and sauté until cooked through, about 4 more minutes.
Add the cream cheese and stir until well combined.
While stirring, slowly pour in the broth.
Divide among four
14-ounce oven-safe bowls or ramekins.
Grease a piece of parchment paper.
Place one-quarter of the dough on the greased parchment and pat it out with your hands to form a small circle, slightly larger than the diameter of the bowls or ramekins you’re using.
Repeat with the remaining dough.
Place a circle of dough on top of each filled bowl or ramekin.
Seal each pie closed by crimping the dough around the edge with your fingers.
Place the bowls on a rimmed baking sheet and place them in the oven.
Bake for 15 to 20 minutes, until the pies are golden brown and the dough is fully cooked.