It seems a little tight on the curb chain, but I have that exact hackamore and it's extremely adjustable. I would try to loosen the curb chain, and if it's fully loose, then try to loosen the noseband part.
Although it may sound gentler, I’ve found that a loosely fitted curb chain (which makes the entire hackamore looser) can result in rougher contact. When the curb chain is loose, the nosepiece doesn’t engage right away when you pull on the reins. This makes it harder to gauge when the contact will come into play, so it’s easy to accidentally overdo your rein aids. A loose hackamore also shifts around the horse’s nose, making it less effective and more likely to pull the cheekpieces against his eyes. I prefer a snugger curb chain fit, where you can fit just one finger between it and his jaw. This allows you to feel the “contact” (the nosepiece engaging) immediately when you pick up the reins, so it’s easier to be light with your aids.
It also depends on the type of Hackamore you have. But the way it looks to me is that it's a little too tight and will leave constant pressure which will result in a very confused and unhappy horse. Mine is much looser and I will get pictures if you'd like.
Lol Ok. If I remember correctly, I can fit two fingers in between the curb chain and his chin, and I have fat fingers. It's just loose enough so that I can pick it up and it can hang down enough to have a little arch.