In a skillet over medium heat, brown the ground beef. When the beef is almost browned, drain the fat, and add the taco seasoning mix along with the amount of water recommended on the package. Let the meat simmer until fully cooked. Remove from the heat and allow the meat to cool slightly.
In a mixing bowl, toss together the lettuce, chopped tomatoes, diced red onion, shredded cheddar cheese, and Frito corn chips.
In a small bowl, combine the salad dressing and the salsa. Mix well.
Add the salad dressing and the prepared beef to the salad and toss. Garnish with sliced olives, if desired. Serve immediately.