Combine milk 1/4 cup of the coconut flakes, cocoa powder, erythritol, and vanilla extract in a blender until ingredients are well mix, Pour the mixture in the large bowl add chia seeds and whisk for 1 to 2 minutes. Transfer the pudding to 4 individual serving bowls or cups and refrigerate for 1 to 2 hour. top with almonds and the remaining cup of coconut flakes and chocolate chips, if desired before serving.