In my opinion the chicken should be kept  outside the fridge so that it comes to its normal tempreture and then cooked as per the will.

When cooking the chicken all day in a crockpot, I guess it won't matter if it's thawed or not.  However, if you try to fry it, you're going to catch the kitchen on fire and/or burn yourself with hot grease splatter!  Don't try to bake or grill it like that either because the outside will be dried out while the inside is still raw.    
 
Either defrost your meat in the microwave or put the chicken in a ziploc bag and dunk it in hot water until it is thawed.

Although "the expert" quoted below said that you need to defrost chicken before cooking, the Empire IQF Chicken (individually quick frozen) says on the package NOT to defrost. The cooking instructions say to lay the frozen pieces of chicken on the backing dish, season as desired, and bake.