01 -  Preheat oven to 480°F or as high as possible. If using a pizza stone, position the stone while preheating. 
 02 -  On a lightly floured surface, stretch or roll the pizza dough into a 12-inch round. Place on a parchment-lined baking sheet or pizza peel. 
 03 -  In a mixing bowl, combine crème fraîche, minced garlic, chopped dill, lemon zest, salt, and black pepper until homogeneous. 
 04 -  Evenly spread the crème fraîche mixture over the dough, leaving a 1/2-inch border around the edges. 
 05 -  Evenly distribute shredded mozzarella cheese atop the sauce. 
 06 -  Arrange sliced dill pickles and red onion (if using) on top of the mozzarella. 
 07 -  Bake for 12 to 15 minutes until the crust is golden brown and the cheese is bubbling. 
 08 -  Remove pizza from oven, garnish with fresh dill, slice, and serve while hot.