Chicken quesadillas with avocado cream

Name: Chicken quesadillas with avocado cream
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: Mexican
Ingredients: 1 tbsp ground cumin; 1 tbsp ground coriander; 2 (about 500g) single chicken breast fillets; 1 tbsp olive oil; 1 corn cob, husk and silk removed; 1 small red capsicum, halved, deseeded, finely chopped; 1/4 cup coarsely chopped fresh coriander; 3 green shallots, ends trimmed, thinly sliced; 2 drained hot chillies (Sandhurst brand, optional), finely chopped; 40g (1/2 cup) coarsely grated cheddar; Pinch of salt; Olive oil spray, to grease; 8 round (20cm-diameter) flour tortillas; 1 large ripe avocado, halved, stone removed; 125g (1/2 cup) sour cream; 1 tbsp fresh lime juice; 1 garlic clove, crushed