This one is similar to Suzi's Russian chicken.
In a large bowl, mix 3/4 large bottle of California or Catalina dressing (you can substitute Russian if you want but it makes it more tangy and less sweet), 1/2 jar of apricot pineapple preserves, and one packet of dry onion soup mix. I usually put the mixture in the microwave for a minute to soften the preserves... makes it easier to stir!
Pour over chicken breasts in a glass baking pan. Top with pineapple rings and bake for 1 hour at 350 degrees.
For extra fun, wear a hawaiian shirt and mix a tropical cocktail!