I suppose you are taking it as a personal affront to your professionalism. But if you could, just for a moment, empathise with the Captain, and see things from his perspective in line with his personality and professional skills...you may be able to get over this sentiment of 'being under watch'.
As I see it, you may be reacting to the situation where you feel you are under trial. The truth of the matter is, every time you do a fine job of landing, you not only prove your professional acumen but more importantly you prove it to those 'doubting' captains their lack of belief in their FO.
You have to remain professional in your approach and thus prove them wrong in having doubted your skills in the first place.