Start with whatever lunchmeat is on sale at the deli counter (excluding ham). If not then some kind of spiced poultry (usually turkey, varies).

Add in a spicy mustard sauce: Spicy brown, horseradish, etc. I've found a wasabi sauce I quite enjoy.

Place one slice of fat free cheese on the sauce (extra protein, helps contain the sauce).

Salad greens mix, with the exception of iceberg lettuce.

All enclosed in a nicely folded tortilla type bread, anything other than plain. Ex: sun dried tomato and basil, southwest, crushed red pepper, etc. Bagels are nice but a self-contained sandwich is better.

Not very scientific (or always appetizing) but the point is to have a complex and varied diet as possible.