Spiced Chicken Thighs with Fava Puree and Yogurt

Name: Spiced Chicken Thighs with Fava Puree and Yogurt
Ingredients: 1/2 cup olive oil; 5 garlic cloves, smashed; 1 1/2 tablespoons coriander seeds; 1 tablespoon cumin seeds; 1 teaspoon grated lemon zest; Kosher salt; Freshly ground pepper; Eight 6-ounce bone-in chicken thighs with skin; 1/2 pound dried split fava beans; 1/4 cup tahini; 2 1/2 tablespoons fresh lemon juice; 1 small red onion, halved and sliced; 1/2 cup golden raisins, soaked in hot water for 30 minutes and drained; 1/4 cup pine nuts; 8 cilantro sprigs, torn; Splash of white wine vinegar; 1/2 cup plain Greek yogurt