Mix wet ingredients and rest a few minutes to ensure the yeast is active (it will get foamy). Add chickpea fiber, vital wheat gluten, and salt. Stir until dough forms.
Knead by hand for 5 minutes. Cover and rest 15 minutes.
Separate into 4 buns and shape. Cover and rest for 15 minutes, then reshape to increase smoothness and surface tension. Place on to a parchment-lined baking sheet. Use greased burger rings if available.
Cover and rest 75 minutes or until doubled to triple in size (no larger). When rest time is almost complete, start to preheat oven at 400°F.
Uncover risen buns, place on center rack in oven and bake at 400°F for 25 minutes. Cool before slicing.