Roger Is Super Cranky Before Bed

This is my boy, Roger. He ain't right, but he's a sweet boy and I love him! He comes when I call and loves when I cart him around. He's almost 1.

Well, he's sweet for the 11 hours he's out free ranging with the others. But lately, when I go out to lock him up for the night, he's been pecking my legs and flapping his wings. I tried pinning him down and pushing him away, but he keeps doing it. If I hold him, he does better. It literally only ever happens right before I lock him up. I'm not sure if it's because he doesn't want me to put him in there because the other chickens are mean to him? He's definitely at the bottom of the totem pole. Or is he having a surge of testosterone at night? I'm just looking for an explanation of his behavior. I've had chickens for a few years now, but he and Randy and Reggie are my first roosters.