This worked great in the crockpot. Here's what I did...
I shredded the chicken and mixed with hot sauce (btw, unable to find Frank's I used Texas Pete's Buffalo Wing sauce and it was great!) and chopped celery.
In a pot on the stove, I melted and mixed the cream cheese, 3/4 bottle of ranch dressing, and shredded cheese.
I combined both in a 4 quart crockpot and heated on low for a couple of hours.
Then transported and served in a 1.5 quart crock pot. The extra came along in a plastic container to refill crock pot as necessary.
Delish, easy, and not as messy as the 9x13. Not to mention takes less room on counter.
This will be my way of serving it now. Thanks rvb and AngAk for your suggestions!
Debbie