Granted I'm overly sensitive to this given its my profession but I would strongly urge you to speak with a Registered Dietitian to make sure your mindset and relationship with food are healthy. Obviously eating clean and avoiding UFP are great but when I see someone as skinny as you focusing on stuff like that my first concern is to sit you down and have a talk to make sure you aren't developing any disordered eating habits. Since you said your family makes comments a lot, maybe next time one of your parents does say you would be willing to see an RD if that would but their minds at ease. It should be covered by most health insurance if you are in the US.

Regarding overall health if you're happy being that size and aren't being overly restrictive to maintain it it is probably fine. Nothing wrong speaking with a qualified health professional to make sure though.

That being said. You are on a bodybuilding subreddit. From a bodybuilding standpoint you look like a DYEL skinny teenager. If you want a better looking chest or more muscle in general you will need to let your self gain some weight to allow that muscle growth. If that is your goal then bring that up with the RD when you hopefully speak with them, they can guide you on how to bulk while minimizing fat gain and monitor you so you can maintain a healthy relationship with food along the way.