I can hold easily 4 (quite large), and not so easily 5. But more than 3 plain eggs, seems impossible for me, and if I eat any other protein, I just do 2 eggs plus meat/fish.
I had no idea about the existence of a burger topped with nut butter, banana and bacon! And that it was called Elvis! (Living in Europe may explain it). Many thanks for sharing it, it seems an "interesting" pairing.