Baked chicken and sweet potato with chickpeas

Ingredients (4 servings): 2 red onions, halved, cut into thick wedges 600g sweet potato, peeled, cut into 3cm pieces 4 tomatoes, halved 2 garlic cloves, thinly sliced 2 tablespoons olive oil 8 (about 620g) chicken thigh fillets 240g can chickpeas, rinsed, drained ¼ cup chopped fresh continental parsley   Method: Preheat oven to 220ºC. Combine…