What are the flagship dishes recommended by Natasha Nicholes for an authentic Chicago brunch experience?

Based on the available content, Natasha Nicholes has mentioned a few dishes and places that she enjoys. For instance, she has a fondness for the mustard fried catfish from BJ's Fish Market and Bakery, which she considers a healthier choice. She also enjoys dishes from Wishbone, a restaurant she frequents. However, she hasn't specifically mentioned any flagship dishes for a Chicago brunch experience.

Would you like to know more about her favorite restaurants in Chicago or her preferred dishes for other meals?