In quantum mechanics, there's the idea that measuring one thing affects another unrelated thing. I'd argue that even being aware of any new thing changes it a bit. If I'm measuring something, I'm aware of it, but how did I know what to measure in the first place?
Here's the noodle baker though: If you have no choice as to what you are and aren't aware of, do you have free will?
I'd say yes because you have bettered your ability to make a decision.
I'd say no because you should be able to decide what you want to know.
Am I making sense?