In a mixing bowl, combine the warm water and light brown sugar. Sprinkle the active dry yeast over the top and let it sit for about 5 minutes until it becomes frothy.
Once the yeast is frothy, add the melted butter and kosher salt to the mixture. Stir gently until combined.
Gradually mix in 4 cups of all-purpose flour, one cup at a time. Knead the dough on a floured surface for about 5 minutes until it’s smooth.
Place the kneaded dough in a greased bowl, cover it with a kitchen towel, and allow it to rise in a warm place for 1 hour or until it has doubled in size.
Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper. Bring 5 quarts of water to a boil in a large pot, then stir in the baking soda carefully.
Once the dough has risen, punch it down and divide it into small sections. Flatten each piece and place a few pieces of pepperoni and a sprinkle of mozzarella cheese in the center. Fold the dough over to seal the filling inside and roll it into a ball.
Drop each dough ball into the boiling baking soda solution for about 30 seconds, then remove with a slotted spoon and place them on the prepared baking sheet.
Brush each pretzel bite with the egg wash and sprinkle coarse sea salt on top.
Bake the pretzel bites in the preheated oven for about 12-15 minutes or until they are golden brown.
Let the Pizza Pretzel Bites cool slightly before serving. Pair them with warm pizza sauce for dipping.
