Mix almond flour, baking powder, and salt together in a bowl.
Add olive oil, egg, and erythritol and mix well.
Form the dough into a ball and let it rest in the refrigerator for 10 minutes.
Divide the dough into 4 portions and shape each into a scone.
Bake in an air fryer or oven at 170°C (338°F) for 15 minutes.