Kentucky Hot Brown

Name: Kentucky Hot Brown
Ingredients: 4 slices bacon; 4 thick slices Texas toast or white sandwich bread; 10 ounces deli-sliced roast turkey; 1 tomato; 1/8 teaspoon kosher salt , optional; 1/8 teaspoon freshly ground black pepper , optional; 1/2 teaspoon chopped fresh parsley , for garnish; 2 tablespoons unsalted butter; 2 tablespoons all-purpose flour; 1 cup whole milk , room temperature; 1/2 cup heavy cream , room temperature; 1/4 cup ( 1 ounce ) grated Pecorino Romano; 1/2 teaspoon kosher salt; 1/8 teaspoon freshly ground black pepper; 1/8 teaspoon ground nutmeg