C in honors physics.....

Something that’s been bothering me for a while is my C in H physics the first semester of junior year, which killed my GPA (physics at my school is hell), but second semester, I worked my butt off and got an A. How does that look?

It looks like you learned how to study for physics. That shows an ability to learn from mistakes and change your approach when something isn’t working for you. Obviously two As would have been better - but it is what it is. Don’t obsess over it.

A+C=B? Don’t worry it does not seem like the end of the world.