So the 2 that are paler don’t seem as bad today but they act okay. Other than the paleness, they don’t act like anything is wrong. I did hear one of my chickens sneeze earlier so now I’ve got that thrown into the mix as well
I really don't see anything concerning.
They have a few small injuries to the combs from picking and/or possibly rubbing their combs against the wire.
The rooster has a few injuries to his wattles, could be fighting - the chunk missing would be consistent of being grabbed. Could be he cut it on wire, but I would lean toward fighting. Sometimes scabs on a rooster are harder to heal since they will stand still and let hens pick at the scabs. I've had to separate roosters from the hens to let them heal up.
Back of the head feather loss is from mating, very back of the comb scabbing is indicative of mating as well from being grabbed by the rooster(s).
They all look to be in good feather condition.
His feet...broken feathers is his main problem - could be from fighting, but I see a lot of people that have feathered footed birds with similar issues. Redness is partially due to hormones and could be a bit of picking going on (hens or he himself picking the feet while roosting)
A sneeze is sometimes just a sneeze. They can get feed/water/debris, etc. stuck in the nostrils or be irritated by something and give a sneeze (sometimes several in a row!). If you hear more sneezing, take note of when that's happening - has that particular bird just been eating, drinking or dust bathing?
With respiratory illnesses a bird will sneeze frequently and consistently - often to the point that symptoms interfere with eating/drinking.
So you only have the 4 hens, or just 4 hens with the black rooster?
Even at that, 4 hens may eventually get over mated by the big beauty, but time will tell.
Just observe behavior.
As for the rooster with the broken foot feather - I would rub a bit of vaseline into the legs, it won't hurt him.
Do look at all the birds nails from time to time and give them a trim if needed.
I think you are doing ok. Some folks need to deworm their flocks a few times a year, so getting a fecal float every 6 months is always a good idea.