after i boil chicken legs, the juice/water that comes from it can i mix it with my dogs kibble? is it fine? he loves it when i do?

Yes as long as there are no spices in the water. But why would you want to since the kibble itself is better for dental hygiene, softened kibble should only be fed to puppies and dogs with poor teeth.

You could but it's giving zero nutrition to your dog. Instead just give it a raw chicken leg. My Newfoundland eats the Prey Model Raw Diet now and has the most amazing coat, silky fur, no dandruff and poops the size of cat poop.

Of course its fine lol, that's almost exactly what Chicken Broth is, and you know dogs love that

so the dog gets snot while you eat like a king?

you can. The bone broth is actually excellent for them.

Sure, just make sure that you didn't add any salt.

If its not salted you can, if it is - no.