Decent story.
Unique and interesting premise.
Good characters and strong character interaction.

Although I would personally like to see more Equestrian-style (idk). The casually unexplained laptop kinda threw me off (seems this alternate universe Equestria has unlocked human tech).
Would like to see whether Feather can actually fly yet, whether the rush of wind in flight cools him down or the exertion overheats him.
Also, has he considered living somewhere higher altitude, such as Cloudsdale? The higher you go, the colder it gets. I'm getting the sunburn might be the issue here because the thinner atmosphere might let through more radiation?

The overheating thing didn't initially come off as odd to me, especially with the MC as a pegasus. It seems natural for pegasi to have more effective thermal insulation since they may have to deal with the freezing temperatures of high altitude flight. Although the skin burn problem was more unusual.

Also, I think I recall him casually comparing something to Princess Twilight in chapter 1? He didn't recognise her name this time. I'll have to double check that.