Bloody egg from one of my Bantams – any insights?

I have four Bantams turning 1 year old this spring. Two are laying regularly — one started at the end of last year, the other just this spring.

Last week, one of them laid a bloody egg. This week she laid two more bloody eggs. She seems totally fine otherwise: eating well, normal energy, no unusual behavior.

For context on our flock: we also have 3 Easter Eggers, 4 Salmon Faverolles, and two standard-sized roosters. One rooster is a calm, good protector. The other is a bit too rowdy for the hens (blind in one eye but doesn’t slow him down!) — we’re actually in the process of rehoming him.

Both roosters do tend to “favor” one of my Bantams, so I’m mentioning that in case it’s relevant.

All the other hens are laying normally. Has anyone seen this before? Could the rooster activity be a factor, or is something else likely going on? Any advice is appreciated!