Whisk the mayonnaise and Italian dressing together in a large salad bowl.
Add the lettuce, chopped deli meat, shredded cheese, croutons, cherry tomatoes, red onion, and banana peppers.
Toss until everything is coated. Serve immediately so the lettuce stays crisp.
Notes
To make dressing from scratch, whisk together ½ cup mayonnaise, 3 tablespoons red wine vinegar, 1 teaspoon Italian seasoning, ½ teaspoon garlic powder, 2 tablespoons Parmesan cheese, and pepper to taste.Use a chopper to cut your meat and veggies quickly. If your meat is a little too soft for the chopper, freeze it for 5-10 minutes first.If you don't plan on eating the salad immediately, keep the dressing on the side until ready to serve.