Green’s Dictionary of Slang

chizzer n.

also chiz
[chisel v.]

a cheat, a swindler.

[UK]‘Nicholas Blake’ Question of Proof viii 154: ‘I suppose Wemyss wasn’t a member of the Black Spot?’ ‘I should think he jolly well wasn’t, slimy little chizzer!’ [OED].
[US]Green & Laurie Show Biz from Vaude to Video 567: Chiz – chiseler; a gyp.