01 - Cook rotini pasta in a large pot according to package instructions. Drain thoroughly, rinse with cold water to stop cooking, and transfer to a spacious mixing bowl.
02 - Add shredded chicken, chopped bell peppers, diced cucumber, and sliced red onion to the cooled pasta.
03 - Drizzle light Italian dressing over the mixture and gently toss with a large spoon until all components are evenly coated.
04 - Refrigerate the pasta salad for 10 to 15 minutes to allow flavors to meld before serving.