I recently acquired a Betta fish. I also purchased "standard" Betta fish food pellets. My Betta fish does try to eat the food, but sometimes appears to struggle to swallow the pellets. I can see the pellets partway outside of its mouth for awhile before it swallows the pellets. Recently, it was even trying to eat new food pellets before even "fully" swallowing the pellet that was in its mouth at the time.
Is this normal, or is there some kind of problem? How can I ensure that my Betta gets sufficient nutrition?