Place the Greek yogurt in a medium mixing bowl.
Add the chocolate protein powder and unsweetened cocoa powder to the bowl.
Whisk the ingredients together vigorously until the powders are fully integrated and the mixture is smooth and aerated.
Stir in the sugar-free maple syrup to achieve desired sweetness level.
Transfer the protein yogurt base to a clean serving bowl.
Place the peanut butter in a small microwave-safe dish and heat for 10-15 seconds until fluid.
Drizzle the melted peanut butter over the yogurt base.
Top with fresh blueberries and cacao nibs and serve immediately.