Are melon plants fine to Feed I have a BUNCH

[iAmCentrochelys sulcata]

I start some melon plants from seeds now they have taken over my front yard covered in them. I’m surprised that they have thrived. Grow like a weeds. I feed them but didn't actually know if it’s safe to feed, my sulcata loves it. He accidentally ate one of my baby melons as well.
Also there’s a mystery and plant that no one seems to know what it is.

 

[RosemaryDW]

Melon vines are great. That other plant could be anything to me, sorry! Sunflower?

 

[iAmCentrochelys sulcata]

Melon vines are great. That other plant could be anything to me, sorry! Sunflower?

can the vine be fed as a its diet?

 

[turtlesteve]

Yes these are good for tortoises

 

[Tom]

Yes these are good for tortoises

What is the last one Steve?

 

[turtlesteve]

What is the last one Steve?

can the vine be fed as a its diet?

UPDATE: I didn’t catch that last picture. The melon vines are great, and I thought that was what you were asking. I am not quite sure what the mystery plant is. That one will be hard to ID until it flowers because the leaves are not distinctive.