choosiest

ˈtʃuːzi

adjective

taking excessive care when making a choice.

she’s become very choosy about food

fussy,finicky,over-fastidious,over-particular,faddish,difficult/hard to please,dainty,exacting,demanding,discriminating,discerning,selective,picky,faddy,pernickety,persnickety,nice,overnice,finical