“挑食”常见的英文表达是 be picky about food 或 be a fussy eater。
be picky about food：直接表达了“对食物挑剔”的意思，强调在食物选择上有较高的要求或偏好。
be a fussy eater：侧重于描述一个人在饮食上的挑剔习惯，通常指对食物的种类、口味、质地等有特别的偏好或排斥。
例如：
He's always been picky about food since he was a child.（他从小就一直挑食。）
My daughter is a fussy eater and only likes a few specific dishes.（我女儿很挑食，只喜欢吃几种特定的菜。）