Eggs, quark and cottage cheese if you can tolerate them. Chobani yoghurt is much higher in protein than most. I'm a real sucker for haloumi atm. Also, add gelatin powder to meals (it's also nice in cofee/tea and doesn't set), although it doesn't have a very well-rounded amino acid profile it can add some and is probably easier to digest than meat proper. If you can, also try bone broth. I personally go through phases of eating nearly vegetarian, sometimes for months, and it doesn't seem to do me any harm. Ditto the well-cooked meats too - and try small amounts at first mixed with something you like like well cooked favourite veggies. As someone else said the problem with tempeh, nuts, quinoa etc is that the protein is fairly low compared to other macros.
Primal since May 2012. Loving life and down 50lbs.