Apple Bacon and Leek Pizza Bites

Name: Apple, Bacon, and Leek Pizza Bites
Ingredients: 1 room temperature Pizza Dough, bought from local pizzeria; Cheddar Mornay Sauce (recipe below); 10 slices thick-cut bacon, cut into bite-size pieces; 2 leeks, washed, trimmed, and thinly sliced crosswise; 2 Granny Smith Apples (or other tart apples), peeled and chopped into ½” pieces; 1 tablespoon fresh sage, finely minced; 1 tablespoon fresh thyme, finely minced; 1 teaspoon fresh rosemary, finely minced; Kosher salt; Freshly ground pepper for the Cheddar Mornay Sauce; 2 tablespoons unsalted butter; 2 tablespoons all-purpose flour; 1 cup whole milk; 1 cup grated white cheddar; 1 1/2 tablespoons sour cream; Pinch of nutmeg; Freshly ground pepper