Cook pasta according to package directions until al dente, then drain and rinse with cold water to stop cooking and cool down.

In a large bowl, combine the cooled pasta with chopped bell peppers, diced cucumber, and halved cherry tomatoes.

Pour the Italian dressing over the pasta and vegetables, then toss everything together until well combined.

Season with salt and black pepper to taste, and for best flavor, refrigerate for at least 30 minutes before serving.