Cook lasagna noodles according to package directions; drain and immediately lay on a non-stick baking sheet.
In large bowl, combine the egg, Italian seasoning, ricotta cheese, and Parmesan cheese. In a separate bowl, combine the spinach, arugula, olive oil, and pepper.
To prepare lasagna roll-ups, spread each lasagna noodle with 2 tablespoons of cheese filling. Top with a handful of spinach arugula mixture [about ¼ cup each roll-up]. Roll up each noodle starting at one end. Repeat until all noodles have been filled and rolled.
Pour ¼ cup of marinara sauce over each roll-up and top with ¼ cup of mozzarella cheese.
Bake at 375, uncovered, for 20 minutes. Serve immediately.