Preheat your oven to 425°F (220°C).

In a skillet, heat the olive oil over medium heat.

Add the minced garlic and sauté for about 30 seconds.

Add the chopped spinach and stir for about 2-3 minutes until wilted.

In a large bowl, combine the cooked spinach, ricotta, mozzarella, Parmesan, salt, pepper, and Italian seasoning.

Roll out the pizza dough on a floured surface into a circle about 1/4 inch thick.

Place a generous amount of the filling on one half of the dough circle.

Fold the dough over the filling to create a half-moon shape and press the edges together.

Crimp the edges with a fork to seal.

Transfer the calzones to a baking sheet lined with parchment paper.

Bake for 20-25 minutes until golden brown and crispy.