Four Cheese Garlic Spaghetti Squash

• 2 tablespoons unsalted butter
• 4 cloves garlic minced
• ¼ cup all-purpose flour
• 1 ½ cups 2% milk or more, as needed
• ½ cup half and half*
• ½ teaspoon dried thyme
• ½ teaspoon dried oregano
• 1 cup shredded Mozzarella cheese
• ¼ cup shredded fontina cheese
• ¼ cup shredded gruyere cheese
• ¼ cup freshly grated Parmesan cheese
• Kosher salt and freshly ground black pepper to taste
• 2 tablespoons chopped fresh chives

For the spaghetti squash

• 1 2-3 pounds spaghetti squash
• 2 tablespoons olive oil
• Kosher salt and freshly ground black pepper to taste