If you want to impress him, do not do what is normal!
Even though he likes mexican food, you should not always resort to a mexican entree'.
Do something different like:
1- Make a light salad.
2- Pop open a bottle of Chardonnay.
3- Steak, potatoes & Steamed vegetables
4-Get a small fruit tray with a dip & feed a few of them to him.