Nitrogen Deficiency Due to Flush???

bottom leaves fading to yellow is a nitrogen defeancy shes doesnt need much in flower but she does still need it as its a mobile nutrient which is in constant use by the plant. Good news one dose of your veg feed will be enough to get her back to green though be carful how much you use auto flowers can be very sensitive to feeds. Nice looking plant anyway bro the brown spots are her asking for cal mag too. so your veg feed should clear her right up :) Best of luck and keep up the great work :)

Some of your top leaves look like they are experiencing light burn because of the yellowing and you can see them starting to point upwards. It does look like you might have a nitrogen issue. Not sure what the fix is here, just wanted to say the top parts look like they are experiencing and extremely small amount of light stress.