Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a large mixing bowl, combine almond flour, whey protein isolate, psyllium husk powder, baking powder, and salt. Mix well to ensure all dry ingredients are evenly distributed.
In another bowl, whisk together the melted butter, eggs, water, and apple cider vinegar until well combined. Gradually add the wet mixture to the dry ingredients, stirring until a dough forms.
Divide the dough into equal portions and shape them into rolls. Place the rolls on the prepared baking sheet, leaving space between them.
Bake in the preheated oven for 20-25 minutes, or until the rolls are golden brown and firm to the touch. Allow them to cool slightly before serving.