Do I have a chance for UCSD?

In State Asian Male at Competitive High School in San Diego

ACT: 34

Math 2: 800

Bio: 750

Chinese: 800

UC GPA: 4.24

ECS: club officer, make iOS apps/bots, work at restaurant, publish poetry

Essays: I spent a lot of time on them. I think 7-8/10?

What are my chances for COMPUTER SCIENCE at UCB/UCLA/UCSD/UCI/UCSB?

Undeclared for UCB but everything else is CS

Yes for UCI, likely for UCSB. I predict UCSD will give you alternate major or undeclared. UC gpa too low for UCLA college of engineering. I think you have a good shot for Cal. Keep us posted!