That’s your opportunity. You don’t need to become the “expert” in a particular glue language, but the more you can improve your glue language skill set, the more valuable you are to a large subset of developers and more able to have watercooler conversations about the cool stuff you learned.
Also look into other common area’s too: they don’t even need to be languages. Make sure you understand JSON. Look at how you can leverage REST to expose your web frameworks. Consider streaming protocols in your API. These are concepts that transcend arbitrary language choice.
The usage of cross-discipline, cross-culture glue languages is only going to grow. Embrace it. Get out of your language comfort zone and work at becoming a better programming citizen. The more our communities can work in glue languages, the better we can work together.