- Preheat oven to 425° Fahrenheit and line a baking sheet with parchment paper. 
- Mix together the gluten-free all purpose flour and baking powder in a large bowl. Then, add in the plain Greek yogurt and mix until a dough comes together (you may need to use your hands to help bring the dough together). If the dough seems dry and won’t come together in a ball, try adding an additional 1-3 tablespoons of Greek yogurt to the dough. 
- Scoop about 1 tablespoon of dough and roll it between the palms of your hands to form it into an oval nugget shape. Place each pretzel bite onto your prepared baking sheet.  
- Make the baking soda wash by whisking together the water and baking soda in a small bowl, then either brush or dip each pretzel bite into the wash. 
- Bake the pretzel bites for 15-20 minutes, or until deep golden brown. While the pretzel bites bake, make your cinnamon-sugar coating by mixing together the sugar and cinnamon in a small bowl. 
- Remove the pretzel bites from the oven and while they’re still warm, toss them in the melted butter then either toss or sprinkle them with the cinnamon sugar.