Spiced Walnut and Spinach Pinwheel Christmas Tree

Name: Spiced Walnut and Spinach Pinwheel Christmas Tree
Ingredients: 2 c. California walnuts, divided; 1 tbsp. Italian seasoning; 2 tsp. fennel seeds; 1 tsp. onion powder; 1 tsp. smoked paprika; 1 tsp. sweet paprika; 1/2 tsp. garlic powder; 4 tbsp. extra-virgin olive oil, divided, plus more for drizzling; 1 (10-oz.) package frozen chopped spinach, thawed, drained, and squeezed dry; 4 oz. goat cheese, crumbed; Kosher salt; Freshly ground black pepper; All purpose flour, for dusting; 2 (8-oz.) tubes crescent dough; 3 tbsp. sugar; 1 tbsp. dried cranberries