Celery Root, Potato, and Leek Home Fries

Ingredients

• 3 medium leeks ((about 1 1/2 pounds), white and light-green parts only, cut into 1/4-inch-thick rounds)
• 2 tablespoons olive oil
• 2 medium potatoes ((about 12 ounces), peeled and cut into matchsticks (1 inch long by 1/4 inch wide))
• 1 celery root ((about 1 pound), peeled and cut into matchsticks (1 inch long by 1/4 inch wide))
• 1 tablespoon chopped fresh rosemary
• 2 teaspoons fresh thyme leaves
• Salt and freshly ground pepper (, to taste)