Need some advice about sick plant - Odd color on leaves - Weird sickness

[Agrade420]

I really need to figure this out, if any of you guys could help me out, I'd really appreciate it.

Haven't gave her any nutes, she about 30 inch from the light, still in a solo cup. Not really sure what's wrong she just started to get these weird spots for no reason.
Roots organics soil.

 

[Agrade420]

Any help would be very appreciated.

 

[Amadeus Forzin]

How long has she been in the Solo Cup? She could be rootbound and crying out for a bigger pot.

 

[Agrade420]

About 2 and a half weeks, yea I think you're right, thank you brotherman.

 

[BigBaron]

Change to bigger pot, and it seems like over watered too, let the soill dry between waterings
Good luck