Spread the ranch dressing evenly over the dough, leaving a ½-inch border around the edges. Scatter on the sliced garlic and mozzarella, then arrange the pickles on top in an even layer.
Transfer the pizza to the oven and bake until the crust is golden and the cheese has browned in spots—8 to 10 minutes on the baking sheet, 6 to 8 minutes on the baking stone/steel.
Remove the pizza from the oven, then sprinkle with some dried dill. Slice and serve.