I'm reading Teddy Roosevelt's books on hunting, this was 1880's. He speaks about eating frying pan bread. Now sure what he is talking about. I know NDN's have some kind of fried bread but in Canada they had what they called bannock, which was sort of a flour dough, to fried the bottom a little to get a crust and then flipped it and propped it up near the fire to cook. I've never run across any pre-1840 reference. I've often wondered why mountain men, etc. didn't eat it.
He doesn't give you more than the name, right? Such is the quandary that many of us into "food/recipe history" find ourselves....
So a Bannock, you are correct, especially when made with oats as would the Scots, was simply a very large biscuit baked in the frying pan, then, as you pointed out, it was flipped and baked on the other side.
He might also be referring to biscuit made by the fire, "reflector style". You put formed biscuits into the pan, and cook the side that is against the bottom. Then..., you use a stick and prop up the frying pan so that the heat from the fire will brown the tops and finish the baking process. The key is... that you use the stick against the bottom of the pan, and the handle of the frying pan against the ground maintains the frying pan position. About half-way done, you rotate the frying pan handle to the other side, thus inverting the biscuits' position relative to the fire..., and you get a more even result.
A third type of bread, is fried on bacon grease or lard. Same dough as biscuits, and some folks add sugar to this dough, then this is fried on one side in hot grease, and then flipped and finished.
Fried Quoits is the same thing but with a hole in the middle like a donut, and you can more easily turn them using a fork or green stick by utilizing the hole in the middle (Most donut dough recipes use yeast, not baking powder as this would. )
Finally, there is also a method of simply baking biscuits or even a yeast, or salt-rising bread, using two frying pans, with one inverted over top of the other to make a make-shift Dutch Oven.
Although it was published in 1910, all of the above breads and methods are in Camping and Woodcraft by Horace Kephart (1907) and he published just the recipes in Camp Cookery a few years later.
Camp Cookery (1910)
LD