Crockpot Chicken Teriyaki

I am always looking for good crockpot meals. This one was excellent. My family inhaled it and wished there were some leftovers.

1 pound boneless skinless chicken breasts
1 20-oz can pineapple tidbits (and their juice)
1/4 cup light soy sauce
1 tablespoon sugar
1 teaspoon ginger
1 tablespoon minced garlic
1 tablespoon vegetable oil
1 tablespoon molasses
cherry tomatoes (optional)
hot cooked rice

1. Combine all ingredients, except rice and tomatoes in crockpot. Cover; cook on high 2 hours.
2. Add tomotoes and cook on low until chicken is cooked all the way through (another 1-2 hours).
3. Serve chicken and sauce over rice.