BSL pullet? Or have I been duped? (Pics)

[Duckee]

I got this chick on 4/22/20 marked as a BSL pullet at local feed store. I know very little about them, but her coloring and lack of yellow head dot seemed correct. She should be 5 weeks old now, but may have been up to a week old when i got her. Take a look, have I been duped? Is she a Roo, and/or a different breed or developing fast because they do begin to lay early? Maybe older than I think?
Day i got her (by the wayer bowl)

One week later. super flighty, fearless, friendly

Today. Blue sheen feathering, red wattles coming on, good size comb, and look at those bulky legs!

Next to my BA also questionable pullet. You cant see her blue that good in the shade.

 

[Chicky Lover]

Well at five weeks old a cockerel would have a larger comb, so I think your's is a pullet. I am new to this too so...

 

[house1917]

Seems very pullet-y, and you can just see the copper hackles typical of BSL hens starting at the base of her neck. One vote for a fast-growing pullet!

 

[Duckee]

Great news! This is all the grandbabies favorite!!! My favorite newbie too..hehe. my fav brabanter hen may have compitition!
1 more vote pullet and im all in! any takers?

 

[Rhodebar Lover]

Black Sex Link means gender is guaranteed by color. 100% pullet

 

[Duckee]

Thanks
Just wanted to make sure the bin at the store wasnt possibly marked with the wrong breed. I am shocked at how much faster SHE is growing/maturing compared to my other breeds of chicks. Maybe i will see eggs early too!

 

[Duckee]

Update: SHE laid her first egg 2 days ago @ 23 weeks 6 days old!

 

[Chicky Lover]

Congrats!

 

[Duckee]

Congrats!

Thank you.
She has only missed one day since she started laying. Eggs are getting bigger quickly. This is her first quite bloody egg.

 

[Chicky Lover]

Very pretty. I have a Rhode Island Red that lays pretty dark brown eggs like your Black Sexlink pullet.