Today was the day.
I used diced pork. I added mushrooms and onions, which were not in Maria's recipe but someone else who had cooked it had included. I cooked it for 15 minutes instead of 5 as I wanted to make sure the pork was very tender. I added all the lemon at all the stages, just as Maria instructed, and it elevated the taste.
Here's Maria's recipe https://www.feistytapas.com/2020/04/instant-pot-baharat-chicken/#comment-2986 There is a printer friendly version accessible from that page as well.
To serve, I made some lovely home made flour tortillas. They were great - they always are, and I don't know why I don't make them more often. It's been so long since I made them, that I couldn't remember the quantities and I googled for a recipe. This is the one I made, and it is the one I will be making again https://www.tasteofhome.com/recipes/homemade-tortillas/
I served with shredded iceberg lettuce, quartered cherry tomatoes, and some greek yoghurt.