I wish it wasn’t so difficult to find unsweetened cereal nowadays

I just tried this in GPT 3 and got the same response as OP

Because In N Out is also in Texas (my city has both), they are comparable in quality/price, and they are presently expanding. I’m sorry this information does not help you specifically, but that does not mean it’s useless to everyone.

P. Terry’s is comparable, but fairly new and currently limited to 30 or so locations in Texas.