Look at the positive thing though! With as much as they give you with their regular selections/entrees you won't have room for dessert or at least we never do. As for the Onion Rings, well, some indulgences are permitted I hope.
I might also mention, with respect to Onion Rings they are very good at Cheddars but if you are wanting a great tasting Onion Ring and don't want to go that far the best (hands down) that I've found in the Shoals area are at Buffalo Wild Wings.
Several years ago the family made a trip to Disney World and had what was at that time the best tasting onion rings we had tasted and it was, of all places at the Contemporary Resort's steak house lounge. The Onion Rings were beer battered and were outstanding and until we ate at Buffalo Wild Wings and tried theirs the best we had found but given the location not the most practical or convenient. Buffalo Wild Wings provided us with identical tasting onion rings to those we had at Disney and they are much more reasonable and convenient.
One other secret or tip! If you are the first customer's seated and ordered at Buffalo Wild Wings restaurant (any day from what I understand) then you (your table/party) gets a "free/complimentary" appetizer from a selection they have and Onion Rings are but one of those selections. Their potato wedges are another but that's another story.
Sorry (again) about mentioning all this great food with your trying to moderate your intake. Trust me I'd be 400 lbs if I didn't have Crohn's disease which due to a few operations on my intestines keeps me from gaining too much weight from what I do end up eating. Most of what I eat just passes on though rather than sitting around and absorbing into the body and creating weight/fat if allowed to go unchecked or without enough exercise to offset it.
Bon Appetite