Step 1: 1. Put the pan on a medium heat and add a little oil. Add the chicken and leave to cook through.
Step 3: 2. Place the tortillas in a pan and drop a little water on top of the stack, cover with tin foil and place in the oven on a low heat.
Step 5: 3. Chop the onion, chilies and peppers and add these once the chicken is opaque.
Step 7: 4. Add the chili powder, tomato puree, garlic puree, pepper and lemon juice.
Step 9: 5. Stir until the onions are browned and the peppers are cooked. Turn the heat off and leave in the pan to remain warm.
Step 11: 6. Remove the tortillas from the oven and serve whilst still hot.