No it is not the same owner. Different companies.
I been to gigio's in Evanston in the past and to the one in des plains both places have great pizzas as for your question im not sure it's the same owner.
Sorry, I'm not familiar with Gigio's in Evanston. But what I can say is the same family has owned and operated the restaurant here in Des Plaines since it opened and the quality of food and service has always been top rate.
Thanks! Your answer is awaiting moderation.