Begin by assembling all necessary ingredients.
In a large pot, bring lightly salted water to a boil. Add the pasta and cook, stirring occasionally, until it reaches an al dente texture—approximately 10 to 12 minutes. Rinse the pasta under cold water and drain thoroughly.
In a separate bowl, whisk together the Italian dressing and salad seasoning mix until a smooth consistency is achieved.
In a large salad bowl, combine the pasta, tomatoes, green, red, and yellow bell peppers, and black olives.
Pour the prepared dressing over the pasta mixture and gently toss to ensure even coating.
Serve and enjoy the delightful flavors of this colorful dish.