Two awesome pizza places with ample locations in the greater Chicagoland area, so no need to go into the city if that is not specifically where you are going. Of note, these organizations are exceptionally well run, so you will get the pizza prepared properly.
#1 choice- Lou Malnati's pizza (deep dish- but their thin crust is also awesome):
https://www.loumalnatis.com/
#2 Aurelios (outstanding thin crust):
https://www.aureliospizza.com/