Preheat the oven to 180°C (356°F).
In a bowl, mix almond flour, cake flour, cocoa powder, baking powder, and salt together.
Cut cold unsalted butter into small pieces and mix with your fingertips until the mixture becomes crumbly.
In another bowl, combine milk, eggs, and sugar and mix well.
Pour the wet ingredients into the dry butter mixture and gently fold with a spatula.
Add chocolate chips and mix one more time.
Shape the dough into a round, place it on the baking tray, and cut into 6~8 wedges.
Bake in the 180°C oven for 20~25 minutes.