In a mixing bowl, combine the chia seeds with unsweetened cocoa powder, brewed coffee, and sweetener. Gradually add three cups of water or almond milk, mixing until blended. Allow to sit until thickened.

In a separate bowl, whip together mascarpone cheese, heavy cream, vanilla extract, and sweetener until light and fluffy, about 3-5 minutes.

Layer the chia pudding and creamy mascarpone mixture in serving jars. Start with chocolate chia pudding, follow with creamy mascarpone, and alternate until jars are filled.

Refrigerate for 30 minutes to allow flavors to meld, and dust with cocoa powder before serving.