What could be causing my jaw to click when i eat or talk sometimes?

Several things: This is a problem that necessitates a face-to-face meeting with your doctor. This will allow him/her to examine you, ask specific questions. And possibly order tests to find out what's wrong and what to do to help you.

TMJ Disorder: The two joint in the jaw must function at the same time in unison. When this is disrrupted by a trauma to the jaw, uneven bite due to teeth being pulled, crowded, jaws do not fit eachother because of growth and development discrepancies, these all cause the soft and hard tissues of your joint to be affected. It can be pain, clicking, popping, inability to open/close mouth properly. Seek a dentist.

Trauma: Traumatic history such as an accident, poor occlusion, that is your bite, the way your teeth come together in different movements of your lower jaw, as well as clinching and gridning of your teeth.