I've been taking chia seeds for the past 3 months. about 2 tbs 2x per day. is it too much fiber, protein, etc. to also take flax or hemp powder?

Depends: Most americans do notget enough omega 3 & too much of omega 6. They should be in a one to one ratio. Chia seeds, flax seeds can offer high doses of omega 3 which help with inflammation and well being. The most common side effect if you get to much would be gastric distress, diarrhea. Hemp is gluten which for many people causes problems so chia and flax are good omega 3 and plant protein.