Awaiting EIC Decision for more than 1 month
Check out this question. You're at the "Editorial Decision" stage, and as you can see from there, the typical duration is a few workdays to a week. So more than 1 month is definitely atypical, and you should write in and ask.

If you're wondering, there's a good chance the abnormal wait time is because there's more than one "editor-in-chief": the original editor-in-chief, and the editor(s) in charge of the special issue.