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If there is a candidate (or candidates) in the pool who you want to interview, I would go ahead and add to shortlist, submit that for approval, and then interview. You may find someone you like more than others already interviewed. However, if you think that’s unlikely, or if you think the faculty are experiencing “interview fatigue” then you might not want to do that just yet. The actual hiring of a candidate already interviewed will likely take some time and they could decline an offer. And in the meantime, the Dean could ask for approval to hire more than one from the pool.
… . But the Dean should inquire about the possibility of hiring more than one candidate from this pool ASAP.