Original Steak Fajitas (with REAL Steak & nothing else) from Whataburger (circa 1988 or so).
Original Breakfast Fajitas (scrambled egg, sausage, & cheese & nothing else), circa same time period.
Of course, all cooked to order & HOT, served with vast amounts of their salsa.
All of which was best eaten in early A.M. time periods. You had to have been there.