Place the beans, yogurt, lemon juice, garlic, cumin, salt and pepper in a food processor. Pulse until very smooth; add up to 2 tbsp (30 mL) water, if necessary. Place in a small saucepan and cook, stirring often for 5 minutes or until heated through. Adjust seasoning to taste. Set aside and keep warm until ready to serve.
Meanwhile, preheat the oven to 400ºF (200ºC). Mix the breadcrumbs with milk; let stand for 5 minutes. Stir in the egg, shallot, garlic, cinnamon, cumin, coriander and salt. Crumble in the ground chicken. Gently mix until well combined. Roll into 24 meatballs and place on a parchment-lined baking sheet. Lightly coat the top with cooking spray. Bake for 15 minutes or until golden and cooked through.
Spread the bean purée on a large, shallow platter and top with meatballs. Sprinkle cilantro and pine nuts over the dish. Drizzle with oil and dust with paprika. Serve with toasted pita.