In a medium bowl, whisk together the almond milk, Greek yogurt, pumpkin puree, maple syrup, vanilla extract, pumpkin pie spice, cinnamon (if using), and a pinch of salt. If using protein powder, blend it in until fully incorporated. Stir in the chia seeds until well combined.
1/2 cup chia seeds, 15 oz coconut milk, 1/2 cup canned pumpkin puree, 1/3 cup plain Greek yogurt, 2 tablespoons pure maple syrup, 1/2 teaspoon vanilla extract, 1/2 teaspoon pumpkin pie spice, 1/4 teaspoon ground cinnamon, Pinch of salt, 1-2 tablespoons vanilla protein powder