Preheat the oven to 180°C (356°F).
In a bowl, mix almond flour, baking powder, and salt together.
Add cold unsalted butter and combine using a scraper until crumbly.
Add nonfat Greek yogurt, erythritol, egg, vanilla extract, and tea leaves from Earl Grey tea bags, and mix well until evenly combined.
Shape the dough into a circle or triangle on parchment paper.
Bake in the preheated oven at 180°C (356°F) for 18-20 minutes.
Let cool before eating.