Finicky

[fin-i-kee] /ˈfɪn ɪ ki/

adjective, finickier, finickiest.
1.
excessively particular or fastidious; difficult to please; fussy.
/ˈfɪnɪkɪ/
adjective
1.
excessively particular, as in tastes or standards; fussy
2.
full of trivial detail; overelaborate
adj.

1825, “dainty, mincing,” from finical “too particular” (1590s), perhaps from fine (adj.) + -ical as in cynical, ironical. The -k- between the final -c- and a suffix beginning in -i, -y, or -e is an orthographic rule to mark the pronunciation of -c- as “k” (cf. picnicking, trafficking, panicky, shellacked).