YOU SAID:

You chef isn't very competent at cooking the chicken

INTO JAPANESE

あなたのシェフは鶏肉を調理する能力があまりありません

BACK INTO ENGLISH

Your chef doesn't have much ability to cook chicken

INTO JAPANESE

あなたのシェフは鶏肉を調理する能力があまりありません

BACK INTO ENGLISH

Your chef doesn't have much ability to cook chicken