Looks like there's nice eyeliner and no real head spot, but I like to see the stripe on the back outlined by smaller dorsal stripes to be sure. Of course, I'm down to one Legbar and she's almost 3, so a long time since I hung out on the Legbar threads learning about sexing chicks.
It's...
I would have some of this made up for tomorrow, it may need it: https://www.backyardchickens.com/t/1046313/incubating-w-friends-come-hatch-learn-chat-meet-new-friends/3870#post_16135610
Keep it warm and humid. Either up your humidity in the incubator or wrap it in a warm, damp paper towel. (Keep the beak out) It needs time to absorb the rest of the veins and yolk sac.
Really not much else you can do at this point, but learn from what happened. Hope the little guy makes it...