In the bowl of a stand mixer, add the gluten-free flour, brown sugar, instant yeast, salt, baking powder and whole psyllium husk. Mix on medium-low speed until evenly combined.
With the mixer running on low speed, slowly pour in the melted butter and water. Increase the speed to medium-high and mix for 5 minutes.
NOTE: The dough should look like thick cookie dough. Add another couple tablespoons of flour to the dough if it looks too wet. (Amount of flour can vary based on what brand you use, the weather that day, etc.) You don’t want the dough to be too stiff or the pretzel bites will be dense - but you want it thick enough so you can roll it out. Basically you want to keep the dough as light as possible - but still rollable. So don't overdo it with adding more flour! Add just enough so you can reasonably work with it.
Use an oiled spatula to scrape down the sides of the bowl. Form the dough into a ball.
Transfer the dough to a lightly greased or floured work surface, and cut the dough into 6 pieces.
Roll each chunk of dough into a 1-2 inch thick strip.
Cut each strip of dough into 1-2 inch pieces. It doesn’t have to be exact, but try to make the pieces even.