FBT's (IMO) like being in groups. The status posturing is normal and they do it in nature.......... Mine are both males and have done it for well over two years. When I first added the new fbt to the tank, it seemed like every fifteen minutes they were going at it. And this didn't let up for months. Now there are days I don't notice it occurring, but sometimes there are periods when it seems to peak again.
As for feeding, my personal opinion is that it stresses them more when you handle them. I just put the crickets in the tank and let them get them on their own. Nor do they need to be fed every day. I feed mine three times a week roughly. Almost always dusted crickets.