01 - Rub the entire surface of the chicken with olive oil, then evenly coat with salt, black pepper, paprika, fresh thyme leaves, and chopped rosemary. Ensure seasoning covers all areas for maximum flavor penetration.
02 - Arrange the carrot chunks, potato pieces, sliced celery, onion wedges, and smashed garlic cloves in an even layer at the bottom of the crockpot. This creates a natural roasting rack and flavors the cooking liquid.
03 - Position the seasoned whole chicken directly on top of the vegetable bed. Tuck the bay leaf into the vegetables and carefully pour the chicken broth around the base of the chicken, avoiding pouring directly over the seasoned skin.
04 - Cover and cook on LOW setting for 6-7 hours. The chicken is fully cooked when an instant-read thermometer inserted into the thickest part of the thigh registers 165°F and vegetables are fork-tender.
05 - Using tongs, carefully transfer the chicken and vegetables to a warmed serving platter. Remove and discard the bay leaf. Allow the chicken to rest for 10 minutes before carving to retain juices.
06 - Pour the cooking liquid from the crockpot into a saucepan. Whisk together cornstarch and cold water until smooth, then stir into the hot liquid. Bring to a simmer over medium heat, whisking constantly for 2-3 minutes until thickened. Serve alongside the carved chicken.
07 - Carve the chicken into serving pieces and arrange on plates with the tender vegetables. Drizzle with gravy if prepared and serve immediately while hot.