Your blog looks fine in Firefox 4.0.
But I am going to guess that the problem in Chrome may be that the browser is incorrectly resizing your photos because of their width is to wide.
your latest picture for example is 800 pixels wide and the space in that theme is 497.
on the latest image :
go back to the post editor and click on the photo with your mouse
two icons side by side show up... the left was is the "edit Image" click on that
resize the image to 60 percent
The image will now be correctly within the limits of the blog.
(When someone clicks you photo it will still open to the origional 800 pixel with that you uploaded--- as that is still the origional file... and Chrome should be able to render the image correctly in the blog view.)