Cut chicken, drained mangoes and banana into bite size pieces. Heat oil in frypan, add chicken and cook over medium heat till brown approx. 5 mins.
Remove chicken. Add tomatoes, chilli, brown sugar, allspice, lemon juice and sultanas and cook over medium heat, 3 mins. Return chicken and cook till chicken is cooked through approx 5 mins. Add mangoes and bananas and warm through.