Frizzle chicks?

[Saraschickens]

Hi! I bought some eggs off craigslist and hatched them.
They were Tolbunt Polish and Double Silver Laced Barnevelders.
I noticed 2 of my 3 Tolbunt Polishes wings started turning outward, and one remained smooth and tight to it's body. Now, at 1 and 1/2 weeks old it's very pronounced. There was a random unknown egg/chick from the guy, that he didn't know if it was a Polish or a black silkie and was blended with something else because it was black with a white belly (it had 4 toes and no foot fur, so I was leaning towards half polish) but he claims everyone is pure, no rooster mixups (except for.. this one was obviously mixed up, lol!). But it's wings started turning outward as well. There are 21 chicks total, and the only 3 like this came from the craigslist seller. I'm thinking frizzles (they were not advertised as frizzles). I'm wondering if there's any other explanation for this, ie sickness? I've asked the seller and am waiting on a response. But curious what people here would say.
First 3 pictures are chick #1

 

[Saraschickens]

Chick #2

 

[Saraschickens]

Chick #3

 

[Saraschickens]

Chick #4

 

[Saraschickens]

Ok, the seller just got back to me. It's confirmed... he has 1 frizzle Tolbunt Polish hen. But he still was baffled on the frizzle black chick. He thinks maybe his black silkie rooster (but she's quite large, and has the 4 toes and no foot feathers). And he said they have been separated about 2 months by the time I purchased any. He has black sex link breed as well. I guess only time will tell!
These are officially my first frizzles ever!