Misread quiz, oddly missing nationality of Hadid (5)
I believe the answer is:
iraqi
'missing nationality of hadid' is the definition.
I can't judge whether this definition defines the answer.
'misread quiz oddly' is the wordplay.
'oddly' means one should take alternating letters (letters in the odd-numbered positions are used).
'misread'+'quiz'='misreadquiz'
The alternating letters of 'misreadquiz' are 'IRAQI'.
Can you help me to learn more?
(Other definitions for iraqi that I've seen before include "foreign national" , "Eg, Baghdad native" , "From a battle zone" , "Asian" , "Native of Fallujah, perhaps" .)