Does anyone know what this is? It looks really healthy and thriving in my veggie garden. I didn’t intentionally plant this. There must have been a seed in my worm castings when I added the amendment to the soil.

I am not sure if I should let it continue or pull it. It reminds me of some sort of squash because there are yellow flowers underneath these massive leaves but nothing else seems to be growing?
If you are out there and reading this could you help me? hmmmmm
Happy Wormin’