For the Meat Rub:
Preheat grill to medium-high heat.
Combine all the ingredients for the rub in a mortar and pestle and grind into a paste. Moisten meat with oil, then rub on the seasoning mixture. Allow meat to rest for 5 to 10 minutes to let the rub set.
Place meat on the greased rack of the grill and cook 2 to 3 minutes per side. Remove from grill and thinly slice. Place atop tortillas with some of the Pico de Gallo, Guacamole and Peppers.
For the Pico de Gallo:
In a medium bowl, combine all the ingredients, seasoning to taste with salt and ground black pepper.