When I try to use LastPass to enter my SkillWaze login credentials, I receive a warning saying "LastPass detected a login form that is insecure. Would you like to continue?"

The LastPass (password management) application has an algorithm that it uses to detect insecure login forms.  This algorithm is not always reliable and can return false positives.  Because of this, LastPass disables this warning by default.

If your warning is enabled, you can disable it by clicking the LastPass icon on your browser bar, and then going into Preferences->Advanced.  At this point you can uncheck the box that reads "Warn before filling insecure forms".