Yogurt-Braised Chicken Legs With Garlic and Ginger

Ingredients

• whole chicken legs , patted dry with paper towels
• Kosher salt, freshly ground pepper
• extra-virgin olive oil
• head of garlic, halved crosswise, plus 1 clove
• piece ginger, peeled, scrubbed, thinly sliced
• coriander seeds
• cumin seeds
• crushed red pepper flakes
• ground turmeric
• plain whole-milk yogurt , divided
• can chickpeas, rinsed
• Thinly sliced scallions, mint leaves, and lime wedges