Cut chicken into pieces, if needed. Add chicken pieces into crockpot. Add 1 jar spaghetti sauce over chicken. Shake dried oregano and garlic salt (or your other favorite additives to spaghetti sauce), to taste. Put lid on crockpot and turn the pot on Low.
Have a nice day, don't worry, be happy. Come home, fix a pot of rice or pasta, maybe a salad, and a loaf of french bread. Carefully remove the chicken from the crockpot to a serving platter (it's tender and will fall apart at the slightest provocation), then spoon the leftover liquid into a gravy boat or whatever you serve spaghetti sauce in. Fight over who gets the top pieces with all the oregano and garlic salt piled on top.