I try to stay out of the disease issues because my take tends to go against the mainstream. Here's my take since it appears you really didn't get any answers. Keep an eye on that eye, and yes it could have been aggravated by netting and rough transport. I have seen these things turn into a bacterial infection, so from this point on, it should not get any worse. If it gets worse or that eye turns cloudy, then I would consider further action.
That pimple could be something benign but also could pop and by doing so cause a wound, so also keep an eye on that, as a wound could also turn into an infection.
For now, water quality must be tops, lacking water quality will feed any potential bacterial infection. I believe food is key to all, so a quality diet is a must, new additions are always lacking in nutrition and their immune systems have been compromised. You could do them well by providing some live ghost shrimp if you have access to them where you are, it would be great if you could gut load them before offering. Fresh minced seafood including salmon, scallops, shrimp, clams, mussels; I usually just cut bits off of what I'm eating. Pellets like New Life Spectrum algae max and Saki-Hikari marine carnivore; carnivores would get their algae based nutrients in the wild from the guts of there prey and the other pellet in high in vit c which is good for the immune system.