Thank you for this recipe Jonathan - made it last night / today. 
The only tweaks I did were to use sesame oil, rather than butter for the sear (I like the flavour that sesame oil imparts to chicken breasts) and I added a tablespoon of butter to each bag to make it a little more savoury.
I cooked mine at 150F for 3 hours (partly to ensure they were cooked all the way through from being thawed).
Here it is with riced cauliflower.
Total with Riced Cauliflower (200g breast) - 956 calories, 72g Fat, 7 Carbs, 72g Protein, 894mg Sodium, 750mg Potassium
It was SUPER savoury!!! 
The best part is that I made 3 of them, so the other two bags are in the freezer.