Heat oil in a large, nonstick skillet over medium heat. Add turkey and cook for 3 minutes, breaking up the meat into clumps. Sprinkle seasoning on turkey and cook, stirring, until meat is cooked through, about 3 more minutes.
Transfer turkey and any juices to a large salad bowl. Add bell pepper, lettuce and vinegar; toss well. Add cheese, chips and scallion greens, then toss again. Serve at once.