LEONARD Nimoy, who ruffled religious feathers last year when he published a nude photography book, "Shekhina," based on his study of the Jewish mysticism Kaballah, is taking his act to the stage. Elisa Monte, a former principal dancer with the Martha Graham dance company, is choreographing a piece based on Nimoy's photos that bows Nov. 19 at NYU's new Skirball Center. Meanwhile, Nimoy hasn't been keeping close tabs on former "Star Trek" shipmate William Shatner. The former Mr. Spock told us he was unaware that Shatner was hosting "Iron Chef USA" on the Food Network. "Bill has his own energy," Nimoy chuckled to PAGE SIX. "We're very good friends, but we don't necessarily follow what each other is doing."