Eggplant Parmesan Lasagna with Swiss Chard

INGREDIENTS

• Extra-virgin olive oil
• 2 medium eggplants (about 2 1/4 pounds total), trimmed, cut lengthwise into 1/4-inch-thick slices
• Coarse kosher salt
• 1 1-pound bunch Swiss chard, center ribs removed
• 2 large eggs
• 1 15-ounce container whole-milk ricotta cheese
• 1 1/4 cups finely grated Parmesan cheese, divided
• 2 tablespoons chopped fresh mint
• 3/4 teaspoon freshly ground black pepper
• 1 15- to 16-ounce can tomato sauce
• 1 8-ounce ball fresh water-packed mozzarella, drained, thinly sliced