This is a traditional dish in my hometown: Gent.
I found a vegetarian version of ‘Gentse waterzooi’ in this cookbook: Donderdag Veggiedag kookboek. In the recipe quorn is used, which I replaced by chickpeas. Normally it should have cauliflower in it too, but I didn’t had any in the house at that moment. It turned to me this was a little bit of a loss for this dish.