Preheat oven to 325°F (160°C). Grease a baking sheet and spread raw pumpkin seeds on it. Roast for 15 minutes to dry them out.
Add pepitas, pistachios, flax seeds, maple syrup, coconut oil, vanilla extract, coffee grounds (start with 2 tbsp), salt, and cinnamon to the pan with the roasted pumpkin seeds.
Toss thoroughly to coat everything evenly. Bake for 25-30 minutes, stirring 2-3 times, until seeds are golden.
Remove from oven. Use a spatula to press the mixture into an even layer about 1/2 inch thick. Let cool completely until hardened. Break into clusters.
Line a second baking sheet with wax paper. Melt desired chocolate (milk, dark, or semi-sweet).
Dip the cooled clusters into the melted chocolate. Place on the prepared baking sheet. Optionally, sprinkle with extra coffee grounds and sea salt before the chocolate hardens.
Chill in the fridge for 10 minutes to set the chocolate. Store in an airtight container in a cool, dry place for up to two weeks.