Are they eating/drinking/active/laying eggs?
How old are these Gals?
You mention they "look unwell" is that because of the feather damage due to mating?
Any "symptoms" like lethargy, not eating, etc.?
Birds that have feather damage due to mating or picking or whatever the cause generally will not feather back in until they molt. I see broken feathers, so that means feather shafts are intact in the skin - usually birds don't molt until Fall, but they can at other times depending on age, etc.
If they are acting fine, then I would not quarantine them just because the look bad - they will likely look that way for most of the year. Put them back with the other hens, watch behavior to see if they are getting picked on. Make sure you have plenty of space for them especially with a rooster. If the rooster is disrupting the hens, then pen him separately. He will be fine and if you are wanting fertile eggs, just put him with the hens for several days then take him back out.