BBQ chicken with corn rice

INGREDIENTS

• 4 chicken leg portions, cut into thighs and drumsticks, skin removed
• 2 onions , 1 chopped, 1 cut into wedges
• 1 red and 1 green pepper , deseeded and thickly sliced
• 2 tbsp olive oil
• 200ml bottled barbecue sauce
• 2 tsp thyme leaves
• 250g long grain rice , rinsed
• 600ml chicken stock
• 340g can sweetcorn , rinsed and drained
• ½ red chilli , finely chopped (optional)