The fact that anyone with Android development knowledge can become a member of this “elite” community of futuristic wearable-tech evangelists is part of what makes Google Glass so awesome. Sure, you will need to learn a few new things, such as the difference between “Immersion” and “Active Card”, but as you will see, the learning curve is not steep.
Read this Tutorial for Aspiring Google Glass Developers: Building Your First Glass App to learn how to develop apps for Google Glass.