Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
In a food processor, pulse the cooked chickpeas, hemp hearts, egg, fresh parsley, ground cumin, sea salt, and black pepper until a coarse, moldable dough forms.
Shape the mixture into 5 small patties and place them onto the prepared baking sheet, pressing down slightly to flatten.
Bake for 18 to 20 minutes, flipping the patties halfway through, until the exterior is golden brown and crisp.
While the falafels bake, whisk together the non-fat Greek yogurt, tahini, fresh lemon juice, and minced garlic in a small bowl until smooth.
Arrange the fresh spinach on a plate, top with the warm crispy falafels, and drizzle the zesty tahini yogurt sauce over everything before serving.