Beat the eggs in a bowl.
Add green tea powder, almond flour, and sugar-free erythritol; mix well.
Melt coconut oil and add it to the batter, mixing thoroughly.
Add baking powder and mix evenly.
Pour the batter into a pound cake mold.
Bake in a preheated oven at 180°C for 25-30 minutes.
Let it cool before serving.