Quiz one about point that's not straightforward (7)
I believe the answer is:
askance
'not straightforward' is the definition.
(askance can mean sideways or diagonal)
'quiz one about point' is the wordplay.
'quiz' becomes 'ask' (quiz can mean to ask a question).
'one' becomes 'an' (an apple is one apple).
'about' becomes 'c' (abbreviation for circa).
'point' becomes 'E' (compass point).
'ask'+'an'+'c'+'e'='ASKANCE'
'that's' acts as a link.
(Other definitions for askance that I've seen before include "With suspicion or disapproval" , "Look this way in doubt or suspicion" , "(Look) at an angle, with mistrust" , "A look like this is sidelong or suspicious" , "Sideways (of look)" .)