Place chicken on a pan covered with foil and lightly sprayed with non stick cooking spray. Season with salt and pepper. Bake for about 18-20 minutes or until no longer pink in the center. (you could also grill the chicken)
Top each piece of cooked chicken with two slices of ham, and one slice of Swiss cheese.
Turn oven to broil and place chicken back in and broil until cheese becomes completely melted.(watch closely so it doesn't burn)
In a food processor or blender, blend raspberries and vinegar.
Over medium heat, bring raspberry and vinegar mixture to a boil and let boil for 5 minutes, stirring constantly.