In a large bowl, using your hands, combine the beef, 1/4 cup salsa and 1/4 tsp. each salt and pepper. Form the mixture into four 1/2-inch-thick patties. Coat in the tortilla chips, patting to adhere.
In a large, dry nonstick skillet, cook the patties over medium-low heat, turning once, until the chips are toasted and the meat is cooked to medium doneness, about 8 minutes.
Meanwhile, in another bowl, combine the tomatoes, avocado, EVOO and the remaining 2 tbsp. salsa; season with salt and pepper. Top the patties with the tomato-avocado salad.
