To falsify a theory does not require to reproduce it in a lab. It means that the theory predicts something that you can actually observe, or not observe and thus disprove it.
For instance, we can falsify the theory like this: let's grow bacteria and subject them to some poisonous chemical. The theory predicts that, after many generations, if the colony survive then it should become resistant to that poison.
Here is an example of a theory that is not falsifiable: after they die, people's souls go to a place that is impossible to observe when you are alive.
Falsifiability is about "impossible to observe", not about repeatability.
Evolution is frequently observed in the lab, particularly in organisms the reproduce quickly and prolifically as in most microorganisms. You might want to google "antibiotic resistance", which is literal evolution creating a public health hazard.
Evolution has withstood well over a century of experiments. It's the inevitable consequence of the facts of inheritable mutations and natural selection. Biology doesn't even make sense without it.
To me it seems like with Popper inquiry into how species came to be can never fit into science. It's a much narrower view than what we commonly understand as science today.