Dunkin Donuts has introduced the Oven-Toasted Chicken Parmesan Flatbread Sandwich to its Oven-Toasted all-day menu. Except for New England shops, the sandwich is available throughout the U.S. for the suggested retail price of $3.99, according to a news report.

The addition to the menu comes at a time when, according to the NPD Group, the chicken sandwich category has grown 7% in the quick service restaurant industry over the past year, reaching 3.5 billion servings for 2008.