Houston12747 Northwest FreewayLater dramatically expanded into Gold Cup, a strip club (though it seems to have closed as of mid-2010s, and now appears to be nearing demolition)
10911 I-10 EStrip center location? (now "A Tooth Doctor for Kids"?)
10535 Gulf FreewayNow a KFC?
9730 Southwest FreewayStrip center location, looks like
11225 Katy FreewayNow an IHOP Restaurant
note: Gallagher's existed in a few other cities but all I can find currently is Houston. These were taken from a phone book, and from what I could tell, seemed to have pretty small footprints for what seems like a full service restaurant.