Preheat the oven to 180°C (356°F).
In a bowl, mix almond flour, coconut flour, baking powder, and salt.
Add egg, coconut oil, erythritol, vanilla extract, and soy milk, then knead the dough.
Mix coconut chips into the dough.
Shape the dough into triangles.
Place them on a baking sheet lined with parchment paper and bake for 20 minutes.