In a bowl, combine the unsweetened almond milk, chia seeds, matcha powder, and Erythritol.
Whisk well to ensure the matcha powder is fully incorporated and there are no clumps.
Let the mixture sit for about 5 minutes, then whisk again to evenly distribute the chia seeds.
Cover the bowl and refrigerate for at least 2 hours or overnight to allow the chia seeds to absorb the liquid and form a pudding-like consistency.
After the chilling time, give the pudding a good stir to break up any clumps and ensure a smooth texture.
If desired, adjust the sweetness by adding more sweetener to taste.
Serve the matcha chia pudding in individual bowls or jars. Optionally, top with sliced almonds and blueberries for added texture and flavor.