Add the mayonnaise, Italian salad dressing, chives, Old Bay Seasoning, celery salt, and ground black pepper to a bowl. Whisk to combine. Set aside.
Flake the imitation crab into a large bowl.
Add the cooked pasta and the bell peppers.
Pour in the mayonnaise mixture and toss gently and coat evenly.
Taste and season with salt if needed.
Transfer to a container with a tight-fitting lid. Refrigerate for at least two hours before serving.
Can be safely stored in the fridge for two days.
