So I've been speaking to someone off a dating app and we've been chatting for nearly half a year she's been brooding lately and wants to have another child and it seems she'd like me to be the kid's father, 
I've been a bit conflicted as I'd kinda want to have a kid with someone I build a connection on what's the thought of plan on this and how should I go along with this?

Don't. She will leave you and use you to pay her bills (and she can, legally speaking)

"Hey guy that I've been chatting with for barely 6 months on an app, wanna impregnate me and end up messing your life up faster than you can blink?

This situation has "do not mess with" written all over it.

You'd need to get a bunch of legal stuff drawn up to absolve you of any responsibility so that you're no more than a sperm donor. Even then, that may not work. Proceed with this at your own risk (and it's a big risk).

Thanks guys for your input I think I might "pull out" haha of this situation I think just knowing how sketchy it is and her already having a child with a previous partner I'm better off either finding myself a pregnant hunny or hopefully one day matching with one of any of the dating apps even if its a bit dryer than what it once was