Preheat the oven to 400°F (200°C). Line a large baking sheet with parchment paper.
Place the squeezed dry spinach and softened cream cheese in a mixing bowl. Beat on medium speed until well combined.
Add the minced garlic, salt, onion powder, chili powder, black pepper, and 1 teaspoon of Italian seasoning to the bowl. Mix until incorporated.
Stir in 1/4 cup of the parmesan cheese and 1/2 cup of the mozzarella cheese.
Unroll the pizza dough onto the prepared baking sheet. Cut the dough in half to form two large rectangles.
Spread the spinach mixture evenly over one dough rectangle, shaping the mixture into a large triangle to resemble a tree. Top with the remaining mozzarella cheese.
Place the second dough rectangle on top. Cut away the excess dough along the edges of the spinach triangle to create the tree shape. Use the scraps to form a small trunk at the base.
Cut horizontal slices through the dough on both sides of the triangle, leaving a solid 1-inch strip down the center. Twist each slice gently to form the branches.
Bake for 22 to 25 minutes, or until the dough is cooked through and golden brown.
Melt the butter and stir in the garlic salt and remaining 1/4 teaspoon of Italian seasoning. Brush the butter mixture over the warm breadsticks and sprinkle with the remaining parmesan cheese.