Preheat oven to 200C
On a large baking tray, place capsicum, zucchini, onion, chicken, spices and olive oil. Season and toss to combine. Pop in oven for 20 minutes.
In a small bowl, combine tomatoes, avocado, coriander, the juice of half a lime and a good pinch of salt.
Warm tortillas, wrapped in foil in the oven for the last 5 minutes. Remove fajita mix from oven. Squeeze over lime juice.
Serve on a large tray with fajita mix, salsa, tortillas and any extra bits you may like (mexican sauces or jalapenos).