Can taking collagen supplements make a dorsal hump larger since the hump is made from collagen/cartilage?

These oral supplements can not have any affect on the dorsal hump of your nose. The factors that really matter are genetics, previous injury, or prior surgery. The collagen you ingest will never add to what is on your nose.

The only thing that can make a hump larger is a nasal injury that causes bony callous and new bone to form on the bridge. Supplements fortunately won't affect the shape. Hope that helps!

No, that is not possible since every bit of cartilage  and bone in the body would be affected, therefore the FDA would not allow that.