Pizza spice (7)
I believe the answer is:
oregano
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pizza spice</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for oregano that I've seen before include "Type of herb" , "that's aromatic" , "Aromatic culinary herb" , "leaves for season" , "Herb used in cookery" .)