Short answer: yes.
Yes, because according to ISO 13485* Section 8.2.4:
[...]
The selection of auditors and the execution of the audits must ensure objectivity and impartiality of the audit process.
Auditors are not allowed to audit their own activities.
Records of the audits and their results, including the identification of the processes and areas audited and the conclusions, must be maintained.
[...]
Therefore, as long as you ensure that the Head of QA provides objectivity and impartiality and there are no connections/ interfaces to own activities I would say: it is acceptable
What does the others say?
*(Attention I use: German version EN ISO 13485:2016+AC:2018+A11:2021)