Sheet Pan Meatballs With Crispy Turmeric Chickpeas

Ingredients

• 2 (15-ounce) cans chickpeas, drained and rinsed
• 1 tablespoon fennel seed
• 1 teaspoon ground cumin
• 1 teaspoon ground turmeric
• 1 large red onion, thinly sliced, divided
• 2 tablespoons olive oil
• kosher salt and freshly ground black pepper
• 1 pound (455 grams) ground turkey
• 1/2 cup panko, or another plain, dry breadcrumb
• 1/4 cup plain yogurt
• 2 tablespoons water
• 1 teaspoon kosher salt
• 1 large egg
• 2 garlic cloves, minced
• 1/2 teaspoon ground coriander
• 1/2 teaspoon ground cumin
• 1/2 teaspoon ground turmeric
• 1/4 teaspoon cayenne, hot paprika, or red pepper flakes, plus more to taste
• 2 tablespoons chopped cilantro, flat-leaf parsley or mint leaves, or a mix thereof, plus more to garnish
• 3 tablespoons lemon juice (from about 3/4 of a lemon)
• 3/4 cup plain yogurt
• toasted pita wedges
• harissa or another hot sauce