It comes as part of the 4 for $3 deal.
Just as a disclaimer, I don't live anywhere close to a Rally's so the burger sat for an hour before I was able to eat it. Still, it was pretty nice despite the lukewarm temperate.
The way the bacon was compacted and cut made me think it was chili for a split second. Combined with the ketchup, the bacon added a bit of a barbecue flavor to the burger. The onions contributed to the same feeling and gave the burger some bite as well as a nice crunch.
The bun was soft throughout with a somewhat marshmallow-like sponginess. It held together well and didn't overwhelm.
Nutritional Info - Checkers / Rally's Bacon Cheddar Crisp
Calories - 390 (from Fat - 150)
Fat - 17g (Saturated Fat - 6g)
Sodium - 1160mg
Carbs - 39g (Sugar - 9g)
Protein - 20g