Chicken quesadillas and sweetcorn salsa

Name: Chicken quesadillas and sweetcorn salsa
Ingredients: 8 ready-made flour tortillas; 250g/9oz mature cheddar, grated; 300g/11oz cooked chicken, thickly sliced; ½ red onion, finely sliced; 60g/2½oz jalapeno chillies, roughly chopped; 1 small bunch coriander leaves and roots; 4 tbsp sour cream; 2 tbsp olive oil; 150g/5oz sweetcorn; 20g/¾oz jalapeno chillies, roughly chopped; 1 green chilli, finely chopped; 1 lime, juice only; 2 tbsp fresh mint leaves, roughly chopped; 2 tbsp fresh coriander leaves, roughly chopped; Salt and freshly ground black pepper