Prepare grill or broiler.
Thread 5 shrimp onto each of 6 (12-inch) skewers. Combine the chili powder and salt; sprinkle both sides of shrimp with the chili powder mixture. Place in a shallow baking dish; cover and marinate in refrigerator 15 minutes. Place kebabs on a grill rack or broiler pan coated with cooking spray; cook 2 minutes on each side or until done.
Preheat oven to 350°.
Place the tortillas directly on the middle rack in oven. Bake at 350° for 7 minutes (tortillas should still be slightly pliable). Top each tortilla with about 2 tablespoons Monte Alban Guacamole and 5 shrimp. Sprinkle evenly with green onions.