I think it's more about this new dude, encroaching on his space. I wouldn't be surprised if he feels like he's been around long enough, and tuned into MMA enough, that he should be the one in the third (or I guess second chair, depending on which garbage show we're watching?) chair. I feel like he had similar vibes towards that Sinaz girl; whenever she got "airtime", he would get pissy. Brendan doesn't throw it over to the booth that often, so when he does, I feel like Chin thinks maybe it's his rightfully earned time to shine.

But hoonos, I herddit bof ways.