Which sandwich is described as having chicken and marinara?

The Chicken Parmigiana sandwich is correctly identified as having chicken and marinara. This sandwich typically features breaded chicken that is fried and then topped with marinara sauce and melted cheese, which is a classic preparation associated with Chicken Parmigiana. The combination of flavors from the savory marinara and the seasoned chicken create a well-loved dish that exemplifies Italian-American cuisine.

The other options do not match the description as closely. The Smashed chicken meatball sandwich is centered around chicken meatballs and may have other flavors but does not specifically include marinara as a primary component. The Italian meatball sandwich focuses on traditional meatballs and their own sauces, rather than chicken. Lastly, the Grilled chicken flatbread is usually served with grilled chicken, veggies, and possibly a variety of sauces, but does not typically feature marinara.