Pour boiling water over raisins and allow them to plump for 10 minutes, drain thoroughly and set aside.
Meanwhile, place egg white in shallow pie plate. Combine panko crumbs and coconut if desired in another pie plate.
Heat oil in skillet over medium high heat. Dip chicken in egg white then in crumb mixture, coating evenly.
Place in hot skillet and saute until golden brown, turn and brown other side until fully cooked. Place chicken on platter and keep warm in oven.
Now prepare sauce. Melt butter in small saucepan. Stir in sugar and water. Cook until mixture thickens and begins to resemble syrup. Add drained raisins to sauce along with rum. Heat through and ladle over chicken to serve.