Is conduit required in Chicago? You wouldn't find conduit in a residential home around here. Anyway, if the breaker has four (4) wires tied to it I would write that up. That would be a violation IMO. Sounds like each GFCI is a seperate circuit. If so, change out the GFCI breaker to a regular breaker and add three other breakers, if there is room, to put each GFCI on it's own circuit. If the exterior receptacles are not GFCI they would then have to be changed out to a GFCI.