Preheat the oven to 170°C (338°F).
Roughly chop the pecans.
In a bowl, mix almond flour, erythritol, and salt.
Add egg, unsalted butter, and vanilla extract; mix well until combined.
Fold in the chopped pecans and dark chocolate chips into the dough.
Shape the dough into rounds and place them on a baking tray.
Bake in a 170°C (338°F) oven for 12–15 minutes, then let them cool.