Betta Fish: Is this a growth on my bettas chin?

It’s really hard to tell, but her chin has changed shape almost overnight. I’m wondering if she hurt herself somehow or if she has developed a growth on her left side of her chin. She’s super active so hard to get a still photo, hence video! I’ll post a photo from 2 weeks ago in the comments so you can note the change in shape.

Also.. pls disregard the state of the tank she’s in, I moved her out of the community tank she lives in to get a better look at her because this tank is nearly unscaped. The parameters are fine in this tank but it could stand to be tidied. Nothing lives in here full time except for some pest snails!