Heat olive oil in a large saucepan, add onion, capsicum and chicken until chicken is cooked through.
Add chilli beans and corn to the saucepan and simmer for 5-10 minutes.
Cut each tortilla in half and grill until crispy.
Place one half of the tortilla on a plate and top with the chicken mixture and a drizzle of Tatua Cheese Sauce, then cover with remaining tortilla half.
Top each tortilla with Tatua Sour Cream and tomatoes.