scientific theories often have evidence to support them. Scientific theories cannot be "proven", only supported. "Proofs" are for math. "Proof", is better known as "evidence".While some so called theories are often blured into fact although in fact there are still a theory, or speculation a beleif with no proof.
Theists often equiovocate with the word "faith". So it depends on how you personally define "faith".Should my faith in God be concidered that much differant?
If your faith is belief based on such things as"good feelings", intuition, desire, blind belief.... Then it is vastly different.
Atheistic faith or scientific faith is mere confidence based on limited but repeatedable results. It is defeatable given new evidence or reason.
It is not the type of faith Paul describes in Hebrews: of things unseen, of that which is hoped for.