My hubby doesn’t have diabetes but eats low carb, he has colloid colitis and when he has a flare up he eats chicken, white fish, mild cheese, cottage cheese, omelette, high cocoa chocolate, sometimes he makes a chocolate mousse with whipped cream and melted chocolate, even though they say don’t eat nuts he’s fine with ground almonds and makes a mug bread now and then. He also eats most cooked meats but sometimes if they are too fatty such as pork belly they can be a bit rich for him.
I have diverticula disease and this is also what I eat when I have a flare up, although since I went low carb it happens rarely now