Is there a way to run chmod on Windows

No, there's no chmod command in Windows.

Either use Explorer's properties page for the file, or from a command shell use the attrib or cacls commands.

Installing Cygwin provides a chmod command utility.

Exactly what do you want to accomplish by using chmod?
Would you be marking some files as executable?
Windows system does not support most (all?) of what chmod is used to do.

You can change read-only and visibility access recursively from the explorer properties.

I was surprised to see CHMOD-Win
But, do be careful with what you get from such sites.

There are some native Win32 ports of Unix commands available. I believe chmod is included, but depending on what you're actually trying to accomplish this might be the wrong tool to use. Perhaps CACLS could be useful (try "cacls" from the command line or search in the windows help).