SharePoint Online Change "New Item" title on NewForm.ASPX

I have been really trying to figure this issue out and can not seem to find the right answer.

I have a SharePoint form that is customized with Microsoft PowerApps, and when you navigate to the form with NewForm.aspx it will always list New item at the top like so:

I have tried editing this with SharePoint Designer but I can not change it that way. I just need to change New item to something meaningful.

Any ideas?

Thanks in advance!