Add the chicken stock and scrape off any bits from the bottom of the pan. Add the marinara sauce, crushed tomatoes, half of the black pepper, and salt, stir to combine. Bring to a simmer and simmer uncovered for 20 minutes, stirring occasionally.
In a medium-sized bowl, stir together the ricotta, mozzarella, and remaining black pepper until combined.
Add soup to bowls and stir in noodles to serve. Add a generous dollop of the ricotta mixture on top with pesto is desired. Garnish with grated parmesan cheese.
Nutritional information is estimated. Information will vary based on ingredient choices and serving sizes.