When knitting or crocheting in the round, you normally have that wonky seam going off diagonally to the left when you slip stitch to join and chain. They say it’s not that noticeable. But to me, it’s like an elephant in the middle of the room that all the party guests are pretending is not there. Ugly, ugly, ugly and I’m sorry but I won’t wear it! I wish I could remember where I learned this on Youtube, but my memory escapes me.
Knitting/crocheting in the round does not line up. It spirals. Think of a candy cane or a barbers pole. This is why the seam travels. What I do is slip stitch the first row and chain up. On all the following rows, slip stitch and chain up, skip the first stitch, then work around. Now work the stitch that you skipped, in double crochet or whatever you are using. Slip stitch to join in the next stitch. Count your stitches to make sure you didn’t miss crocheting into any of the spaces at the end. Otherwise, you might do an unintentional decrease and make the hat smaller. Keep repeating the chain one skip one technique. You will still have that jog but you will see it on the inside of the hat. Your rows will line up perfectly. This is especially nice for striped hats. Rather than the barber pole effect with the wonky jog, it will be more like a bullseye target type thing lined up. If I can find it, I will post the link. In the star pattern, it’s a little different. I would try skipping that entire space and coming back to do both stitches in the missed space at the end of the row, or only do one HD crochet then the second one at the end. See which looks better.