Place chicken in 5- to 6-quart slow cooker. Mix pineapple, onion, garlic, lemon juice, salt, marjoram, red pepper and turmeric; pour over chicken.
Cover and cook on low heat setting 4 to 5 hours or until juice of chicken is no longer pink when centers of thickest pieces are cut. Remove chicken from cooker, using slotted spoon; place in serving dish. Cover to keep warm.
Remove fat from sauce. Mix cornstarch and water; stir into sauce.
Cover and cook on high heat setting about 15 minutes or until thickened. Stir in olives.
Pour sauce over chicken. Sprinkle with parsley.