01 - Rub the chicken all over with olive oil, salt, pepper, paprika, thyme, and rosemary, ensuring even coverage.
02 - Arrange carrots, potatoes, celery, onion, and garlic in an even layer at the bottom of the crockpot.
03 - Place the seasoned whole chicken directly on top of the vegetable bed. Tuck the bay leaf beside the bird and pour chicken broth around the base, avoiding pouring over the chicken.
04 - Cover and cook on LOW setting for 6–7 hours until chicken reaches internal temperature of 165°F and vegetables are fork-tender.
05 - Using tongs, carefully transfer chicken and vegetables to a warmed serving platter. Discard the bay leaf before serving.
06 - Transfer cooking liquid to a saucepan. Whisk together cornstarch and cold water until smooth, then stir into the hot liquid. Simmer over medium heat for 2–3 minutes, stirring constantly until thickened.
07 - Carve the chicken into portions and arrange with vegetables. Drizzle with prepared gravy if desired.