More towards the beginning of Game of Thrones S08E04 when the North is feasting, Daenerys singles out Robert's bastard son Gendry and awards him Lord of Storm's End for no apparent reason. While doing so Jon gives her an odd look, kind of questioning what she's doing.
Was this power play against Jon Snow to more establish herself as ruler for once they take over King's Landing, or am I reading too much into this? Is there any other reason/benefit why she would do this at this point in time?
Follow up question: Right after this happened Tyrion glanced over to Sansa and she looked really troubled by it all. Why?