Indian-Spiced Chicken with Raita

INGREDIENTS

• 1 tablespoon sweet paprika
• 2 teaspoons ground cumin
• 1/2 teaspoon ground cinnamon
• 1/2 teaspoon ground coriander
• 1/8 teaspoon cayenne
• 1 cup plain yogurt
• Juice of 1/2 lemon
• 1 tablespoon grated fresh ginger
• 1 1/4 teaspoons coarse salt
• 1/4 teaspoon freshly ground black pepper
• 2 pounds skinless chicken thighs, scored
• 2 tablespoons olive oil
• 2 yellow onions, sliced crosswise 1/4 inch thick
• Lemon wedges, for serving
• Raita
• Sprigs fresh cilantro, for garnish