Chenoweth is a wonder, sounding a little bit country whenever Jackie is most herself, as in “Each and Every Day,” a love song to the infant Victoria; taking her high notes out for a spin in “The Royal We,” a duet with Marie Antoinette (Cassondra James); and convincing us for a moment, in a turn-on-a-dime song called “Grow the Light,” that Jackie has recalibrated her priorities. Not so. For the central character of this tale, living out her American dream, there is no point of satiation. There is only a vast emptiness that must be filled with more, more, more. Preferably, of course, dipped in gold.