Prepare Chicken: Place chopped onion on bottom slow cooker. Remove giblets from chicken and towel dry entire chicken well, both inside and out - this step is important to ensure chicken doesn't turn out "watery." Using your fingers, gently pry the skin away from the chicken all around, so you'll be able to season chicken underneath skin.
Combine Spices (can be done in advance:) In a small bowl, combine all the spices, from salt to black pepper. Mix well. Use your hands to evenly spread two-thirds of the spice mixture onto chicken, underneath the skin. Be sure to include all areas of chicken (legs, back, thighs, etc.) Use remaining spice mixture to spread on top of skin. Place seasoned chicken on top of chopped onion in slow cooker. Cover and keep chilled overnight.
Cook: When ready to cook, turn slow cooker on Low for 5-6 hours only. Keep on warm until ready to serve.
If you're using a smaller chicken, adjust for less salt.This dish is delicious over fluffy rice or potatoes so you can fully enjoy the sauce.For best results, allow chicken to sit in seasoning overnight. I simply prepare the entire thing overnight and turn Crock Pot on the next day!If you'd like more browning on top, place cooked chicken on a sheet pan and broil for 5 minutes or so, watching carefully not to burn.If you enjoyed this recipe, please come back and give it a rating :)