If you blink, you'll miss it.
This places is Right after you drive under I20 at Evans Mill. There is a small parking lot (probably 6 cars deep). The building is very small and it has a drive-thru window on the right side.
The food is delicioius! The woman at the window is okay. It really depends on how her morning is going. She's never been rude but you could say she isn't particularly nice at times understandably.
My suggestion would be to look at the menu someone was so nice to post a picture of here prior to going so you know exactly what you what and in what quantities.