faddy
adjective UK informal uk/ˈfæd.i/ us/ˈfæd.i/ (also faddish, uk/ˈfæd.ɪʃ/ us/ˈfæd.ɪʃ/)
有特殊好恶的；（尤指）挑食的
liking or disliking particular things, especially food, for no good reason
I was a really faddy eater when I was young. 我小时候十分挑食。