Roast summer vegetables & chickpeas

INGREDIENTS

• 3 courgettes , thickly sliced
• 1 aubergine , cut into thick fingers
• 3 garlic cloves , chopped
• 2 red peppers , deseeded and chopped into chunks
• 2 large baking potatoes , peeled and cut into bite-size chunks
• 1 onion , chopped
• 1 tbsp coriander seeds
• 4 tbsp olive oil
• 400g/14oz can chopped tomatoes
• 400g/14oz can chickpeas , rinsed and drained
• small bunch coriander , roughly chopped