In a large bowl, whisk together the Greek yogurt and vanilla protein isolate until the powder is fully incorporated and the texture is smooth.
Fold the cinnamon into the yogurt mixture for flavor enhancement.
Prepare the fruit by rinsing blueberries, strawberries, and raspberries under cold water and patting dry with paper towels.
Select four 12-ounce wide-mouth glass jars for assembly.
Distribute 1/2 cup of the protein-yogurt mixture into the bottom of each jar.
Add a layer consisting of 1/4 cup of mixed berries and 1 tablespoon of chia seeds to each container.
Add the remaining yogurt mixture as a second layer across the jars.
Top each parfait with 1/4 cup of granola and the remaining berries.
Seal the containers and refrigerate for a minimum of 30 minutes to allow the chia seeds to hydrate before consumption.