Bloom your thickener: If using chia seeds, set them aside.
If using gelatin, sprinkle it over 2 tablespoons of cold almond milk and let it sit for 5 minutes to bloom.
Mix the base: In a medium bowl, whisk together pumpkin puree, Greek yogurt, vanilla extract, sweetener, pumpkin pie spice, and a pinch of salt until smooth.
Add protein and milk: Whisk in the protein powder. Slowly add the remaining almond milk, whisking until creamy. If it’s too thick, add a splash more milk; too thin, add a little more protein powder.
Incorporate the thickener: For chia, stir seeds into the mixture and let it rest for 10 minutes, then stir again to break up clumps.
For gelatin, gently warm the bloomed gelatin in the microwave for 5–10 seconds until just melted (not hot), then whisk it into the pudding base.
Taste and adjust: Sweetness and spice vary by brand. Taste and add more sweetener or spice if needed. A touch more salt can boost overall flavor.
Chill to set: Cover and refrigerate for at least 1–2 hours (chia will thicken more over time; gelatin will fully set after 2–3 hours).
Overnight is best for peak texture.
Serve: Spoon into bowls. Top with a dollop of whipped cream, a sprinkle of cinnamon, or a few chopped pecans for crunch.