Make the Cowboy Butter Ranch by combining the melted butter, minced garlic, Dijon mustard, lemon juice, paprika, chili oil, mayonnaise, sour cream, buttermilk, chopped dill, chopped parsley, salt and pepper.
Assemble the sub by layering the chicken, bacon, onion, tomato, mozzarella cheese, and lettuce on the sub bread.
Spread the Cowboy Butter Ranch over the top of the assembled sub.
