In a large mixing bowl, combine the finely chopped parsley, cilantro, dill, and spring onions.
Stir in the minced garlic, beaten eggs, chickpea flour, baking powder, cumin, turmeric, salt, and black pepper until a thick batter forms.
Heat the vegetable oil in a large non-stick skillet over medium heat.
Scoop approximately 2 tablespoons of the herb mixture per ball and place into the hot oil, flattening slightly with the back of the spoon.
Fry the herb balls for 3 to 4 minutes per side until golden brown and firm, then transfer to a paper towel-lined plate.
In a small bowl, whisk together the Greek yogurt, lemon juice, lemon zest, olive oil, and salt.
Serve the warm herb balls immediately with the lemon yogurt sauce on the side.