I would only just recommend you start slowly because 'meat' is much harder on digestion than fish, so for you, it could cause some upset and maybe that is not the best way to start out.
Boiled chicken legs/thighs until the meat falls off the bones is great (use the liquid from braising for a 'gravy' ...puree one boiled onion in the broth and cook down, presto, gravy!)
I would do this for a few days and see if all ok, then start adding meat in...again the boiled/braised meats will be easier on digestion. When you do switch to meats make sure you chew well and don't overfeed to start.
Whats easier to digest is probably up to your body, but it will tell you!
good luck with the additions! eat what you want and enjoy!