Bring a pot of salted water a boil. Cook pasta according to package instructions.
In a large bowl, add the red onion, cherry tomatoes, green bell pepper, black olives, salami, monkfruit sweetener and creamy Italian dressing. Add the cooked pasta. Toss until very well combined.
Chill the pasta salad in the fridge for at least 30 minutes before serving. You can also make this one day ahead and store in the fridge.