Preheat the oven to 200C/400F degrees. Line a baking tray with parchment paper.
In a medium bowl, add the coconut flour, psyllium husk powder and baking powder. Whisk lightly to combine.
In another medium bowl, whisk the eggs.
Add the Greek yogurt and whisk until combined and smooth.
Add the melted butter and whisk in.
Add the mixed dry ingredients to the bowl and stir well.
Sprinkle the apple cider vinegar over the mixture and work it through. (This acts as an leavening agent with the baking powder).
Add the orange rinds and work into the mixture.
Gently pour the boiling water over the dough. Mix well and form into a dough mixture.
Let the dough sit for 10 minutes for the psyllium husk powder to expand.
Cut the dough into 3 even pieces.
Roll out each piece into even log shapes.
Place all 3 logs together on a flat surface and pinch the ends all together.
Braid them into an even braid and seal the bottom ends together.
Place the bread on the parchment paper lined baking sheet.
Brush with the beaten egg (or even melted butter) and bake for 10 minutes at 200C/400F degrees. Reduce the oven temperature to 180C/350F degrees and bake for 25 minutes until golden and firm.
Remove from the oven and either serve warm or allow to cool before slicing.