1 spaghetti squash, halved lengthwise, seeds removed
7 tablespoons extra virgin olive oil, divided
Salt and pepper
1 large leek, white and inner pale green parts, diced
1 cup broccoli, diced
1/4 teaspoon red pepper flakes
4 garlic cloves, minced
1 bunch chard, stems removed, roughly chopped
1 cup shredded smoked mozzarella cheese, divided
1 cup panko breadcrumbs
2 teaspoons fresh rosemary, minced