Combine 2 teaspoons salt, 1 teaspoon freshly ground black pepper, 1 teaspoon paprika, 1 teaspoon dried thyme and 1 teaspoon lemon pepper in a small bowl.
Rub this spice mixture all over the 3-4 pound whole roasting chicken, including the back of the chicken and the sides as well as inside the chicken cavity.
Squeeze some lemon juice inside the chicken. Then stuff the chicken cavity with 1 lemon, halved, 1 whole garlic bulb, sliced in half and 1 small onion, quartered (as best you can). I don't bother peeling the garlic or onions. I just put them in there as they are.
Place chicken breast side up in the slow cooker. No other cooking liquid is needed.
Cover and cook on low setting for 6-8 hours (or until juices run clear.)
When slow cooking whole chickens, the skin will stay soft. If you want a crispier skin, you can pop it under the broiler to crisp it up.First, very carefully remove the cooked chicken from the slow cooker and save the juices for chicken stock. Place the chicken in an oven safe dish. Turn the oven broiler on low and broil for 4-6 minutes. If you have an oven safe Crockpot insert, you can just transfer it to the oven in the insert. Keep an eye on your chicken, it may require more or less time to crisp up. NEVER walk away from your oven when using the broiler, it can burn quickly if you aren't carefully monitoring.
Serve and enjoy! You can strain the juices from the slow cooker and make a gravy if you prefer or save it for another recipe that requires chicken stock.
Notes
Please refer to my FAQ’s (Frequently Asked Questions) and ingredient list above for other substitutions or for the answers to the most common questions.