Should teenagers be treated like adults in your opinion? By being treated like adults I mean making their own decisions, using their own judgment, not being told to do things like chores or any other responsibilities they have?
In my personal opinion teenagers should be treated like adults because in a few years they will be adults. They should learn responsibility before they become adults. They should be entitled to their own opinions and views. I feel like adults treating teens like children takes away from their growth and denies them the right to be mature and independent. Teenagers are in between birth and full growth, which means that they are developing adult minds. I am 14 and this is just my personal opinion.
Definition of a teenager: People who are between 13-19 years old. 
Teenage brains are not fully developed. In particular, the judgement part which is found in the frontal lobes of the brain. Teenagers should therefore not be given the same amount of responsibilities as adults, as they are more likely to make incorrect decisions they may regret later in life. This idea is clearly reflected in driving laws and minimum drinking ages in order to prevent reckless decisions at their impressionable ages. Such ideals are also embodied in the family unit, where parents are legally required to take responsibility over their children until they meet the age where they become an independent adult in their respective country. If your parents let you do whatever you wanted and you broke a law or something, they would be held responsible, so they will obviously need to excercise greater caution and treat you like a teenager.
"By being treated like adults I mean making their own decisions, using their own judgment"
Teenagers can also make their own decisions and use their own judgements in numerous ways. There are simply reasonable restrictions being placed on them by their parents to ensure their safety.
"not being told to do things like chores or any other responsibilities they have?"
Chores and other household responsibilities are necessary for a family to function. If no one did any chores, your house would break down in disrepair. People of all ages are required to help out, especially adults. The fact that you prefer not to do chores highlights your inability to make good decisions and supports my argument that adults need to continue viewing teenagers as teenagers.
"They should learn responsibility before they become adults."
Exactly, and this responsibility is taught to them by their parents.
"They should be entitled to their own opinions and views."
"I feel like adults treating teens like children takes away from their growth and denies them the right to be mature and independent."
You supply absolutely no evidence for such a point. Adults viewing teenagers for what they are - teenagers - does not take away from their growth. Rather, it allows them to assist in their growth to adulthood by understanding their malleable nature.