Prepare the dressing by whisking together the ¾ cups ranch dressing, ¼ cup salsa, and 3 tablespoons minced cilantro. Set aside.
To prepare the chicken, heat the 2 tablespoons vegetable oil in a large skillet over medium-high heat. Season each side of the 2 boneless skinless chicken breasts generously with 2 tablespoons taco seasoning.
Cook the chicken breasts on each side for about 4 minutes or until no longer pink. Remove and set aside and cut into cubes.
Place the ½ cup whole kernel corn into the skillet and cook for a few minutes. Remove from heat and set aside.
To assemble the salad place 1 head shredded lettuce, in the bottom of a large bowl. Add the cooked chicken, 3 diced Roma tomatoes, 2 diced avocados, ½ cup grated pepper jack cheese,3 sliced green onions, cooked corn, ½ cup cilantro leaves, and crushed tortilla chips,. Drizzle and toss with the dressing and serve.