Tenderize chicken breasts on cutting board; place in slow cooker. Mix together chicken broth, water, brown sugar, seasoning salt, pepper, lemon juice and butter; add to slow cooker. Cook on low 1 1/2 hours, add potatoes; let cook 1 extra hour. After chicken and potatoes are done, place in separate dish after draining. Coat cherries and baby spinach with roasted red pepper dressing. Line serving dish with baby spinach mixture; add chicken and potatoes.