Preheat the oven to 180°C (356°F).
In a bowl, mix rice flour, baking powder, and salt.
In another bowl, cream the unsalted butter and sugar together.
Add egg and soy milk, and mix well.
Add the dry ingredients to the butter mixture and combine.
Fold in macadamia nuts and chocolate chips evenly.
Shape the dough into scones and place them on a baking tray.
Bake in the oven at 180°C (356°F) for 20-25 minutes.
Let cool before serving.