Green’s Dictionary of Slang

1. a light kiss [= SE peck].

1992

R. Puxley Cockney Rabbit.

2. food [= peck n.¹ (1)].

1937		in Birmingham Eve. Despatch 19 July in DSUE (1984).
1960		J. Franklyn Dict. of Rhy. Sl.
1972		Dodson & Saczek Dict. of Cockney Rhy. Sl. 39: Tooting Bec. Peck, i.e. victuals; now usually reduced, as in: Isn’t it time we had some Tooting?