Should I send a mail to query the process of my manuscript since it is in the "Awaiting EIC Decision" status for two weeks?
I am encountering the same situation and I fully understand that how it feels when it comes to a final decision. 


There must be many papers awaiting EiC's decision. The request to jump to the queue is a bit impolite.
I think it has small chances that the requesting email would affect the final decision because I think AE already has a decision or recommendation. But it would have a negative effect for your next submissions;
I would suggest to send email to EiC directly after 4 weeks.