Green’s Dictionary of Slang

(US prison) the electric chair.

1932		R. Fisher Conjure-Man Dies 211: You may be the cause of putting him on the frying-pan.
1935		A.J. Pollock Und. Speaks.
1963		in T.I. Rubin Sweet Daddy 40: Ever bust him won’t be for here. Be for the frying pan [...] upstate.