Treating Candi like he would her during lunch and arranging a special evening meal for Candi and Brandon should have been Zeph's first clues that Naamah was making plans of her own to take advantage of the situation and make the most of the special time alone with him she was to receive as thanks for the hard work she had done that went far beyond just closing off a section of the Enchantress to others for a night.
However, he was being pulled in ten different directions at once with all of the behind-the-scenes work he had to do in regard to planning the travel arrangements of Archon Crix Zis and his family members on top of his other duties.
Just his part in the development of the permanent solution to keeping Alora above ground would have been enough to fill his days as he wanted to ensure that everything was running smoothly and that no problems would arise during his time away from Central.