She's young, but she likes to eat the same food older guys like.
She's kind of strange because she likes the same food old guys do even though she's still young.
この場合、次のような言い方ができますよ。
ーShe's young, but she likes to eat the same food older guys like.
「彼女は若いのにおじさんが好きなのと同じ食べ物が好きだ」
ーShe's kind of strange because she likes the same food old guys do even though she's still young.
「彼女は若いのにちょっと変わってて、おじさんが好きなのと同じ食べ物が好きだ」
ご参考まで!