Pre heat oven to 200c / 400f / Gas 6
Heat oil in frying pan over a medium heat.
Add onion and cook for 2-3 mins. Add peppers, garlic and spices and cook for a further 2 mins. Add the shredded chicken and spinach and stir through.
Top each tortilla with pizza sauce (or passata), a third of the chicken mixture and finally a third of the cheese.
Place in oven for approx 10 mins until the cheese is melted.