The “Your Message” label does not line up with its field, unlike the other labels in the Contact Form module regardless of where it’s in a one column, two, etc., as shown here:
Phil - yes, it looks the theme may be trying to style the contact form module incorrectly. You can always use some custom CSS or go with a different contact form widget. WR Contact Form is a pretty good option though you may run into the same issue. Feel free to send along temp admin access though via private reply and I can take a quick look for you.