FSA Vera Pro and Triban Grvl 120 – chain is too far out from frame

Hi all

Got a pair of these cranks, put them on, however the chain is jumping when on the largest ring. Does anyone know what BB I would need to get to replace it? Measured at 124 mm across however Decathlon shows it as this one: https://www.decathlon.mt/p/202962-266533-68-mm-square-taper-bottom-bracket-ibex-ml-113-mm.html

Thanks