finicky

他是个超级挑食的人，连面条的形状都要挑剔。

He's such a ___finicky that he even complains about the shape of his noodles.

我妹妹对食物很挑剔，只吃特定的几种蔬菜。

My sister is very ___finicky about food and only eats certain types of vegetables.

这台咖啡机的操作非常挑剔，需要精确的水温和研磨度。

This coffee maker is quite ___finicky, requiring precise temperature and grind size.