Taste of Chicago runs July 8th through the 12th in Grant Park, and it looks like the only Uptown representative will be Iyanze (4623 North Broadway). According to the City's website, it will offer these dishes for Taste tickets:
Jerk Chicken w/ Red Rice & Beans & Plantain
Caramelized Spicy Jerk Wings w/ Jollof Rice
Vegetarian Spinach & Plantain
and these in the "Taste of" category ($2.50 or less):
Caramelized Spicy Wings
Food and beverage tickets are sold in strips of 12 tickets for $8.50 (includes $2.50 charge for Taste amenities). You can see all the participating restaurants and their menus, including food trucks, five-day restaurants, and pop-up restaurants, here at the City's website.