In a food processor, pulse the chickpeas, hemp hearts, parsley, cilantro, garlic, cumin, coriander, salt, and pepper until a coarse meal forms.
Add the egg whites and pulse again until the mixture is combined but still retains some texture.
Form the chickpea mixture into 4 small patties of equal size.
Heat the avocado oil in a non-stick skillet over medium heat.
Sear the falafel patties for 3-4 minutes per side until golden brown and crispy.
In a small bowl, whisk together the tahini, lemon juice, and a splash of water to reach a drizzling consistency.
Spread the Greek yogurt onto a plate, top with the crispy falafel and diced cucumber, and finish with the lemon-tahini drizzle.