Pochettino said: "I think Nico has the potential to be a very, very good striker, a fantastic striker. It is only about patience and time.
"He got criticism from the beginning because he was always compared with Didier Drogba after he had been here a few years. And when I talk about the history of the club, it is the same... we are in the process of building a team to match the history of Chelsea.
"To judge and be so radical with your opinions, be careful because it is about seeing what is going on and what we are doing here.
"With Nico, through confidence and through working really hard, he is changing opinions.
"I accept, if you are seeing things that you do not like then you can describe it but because football is so dynamic and can change, I am so happy that people are now seeing Nico in the way we saw him (earlier in the season)."
Pochettino was happy seeing Jackson celebrate with the away fans in victory at Nottingham Forest.
He said: "I am so happy about that (celebration) because I enjoy it when the fans enjoy it with the players. For me, it is more (important) than the relationship with the coach.
"We need to create things where the fans really love the players because they are the principal actors.
"With Nico, we backed him and we gave everything to be calm and work hard because we knew the capacity and quality he has and because he has the time to show it.
"We are so happy and so proud this happened."