WHY HER We went Peanuts for her in ''Charlie Brown.''
WHY NOW She's got us under her spell in ''Wicked.''
''It's good to see me, isn't it?'' Kristin Chenoweth is suspended midair in a mechanical bubble, armed with a magic wand, a sparkling smile, and a soprano that soars far beyond the land of Oz. She's Glinda the Good Witch in Broadway's ''Wicked,'' and she's just won over the audience. ''I don't think I'll ever top that,'' says the Oklahoman, 33. Something tells us she will. She's gone from stage -- a tap-happy turn in 1998's ''Steel Pier,'' her Tony-winning Sally in 1999's ''You're a Good Man, Charlie Brown'' -- to TV's ''Annie'' and ''The Music Man'' with hardly a hitch. (Well, one hitch -- a short-lived, self-titled NBC sitcom: ''I'd do it again,'' she maintains.) She's got killer comic timing, a master's in opera, and solo album No. 2 on the way. But this Broadway baby has bigger dreams: ''I'm really interested in forensic science,'' she confesses. ''I'd love to learn about DNA and fighting crime.'' ''CSI: The Musical?'' We've got the star right here.