Can I get some restaurant ideas near Grant Park? Looking for both fine dining and casual options?

Husband and I are visiting towards the end of August. Most of our trip will be during the week. Looking for ideas for a good date night dinner. Definitely would like some more up scale and even casual options as we just want some really good food. Also looking for recommendations for things like the best donuts, pizza (not deep dish), hot dogs, Italian beef… etc. we’ll be staying near Grant Park and would like to walk or table public transportation if we can.