She looks like she is close to full grown and is showing the mustard splotches a sexually mature veiled chameleon shows. I would make sure to put an egglaying container in the cage. It should be opaque and a minimum size of 12" deep x 8" x 8". It should be filled with washed playsand that is moist enough to hold a tunnel. Can you tell me an approximate length please or put something in the picture we will know the size of compared to her?
I would remove the water dish. Unless you keep them very clean they are just a place for bacteria to grow.
To help with hydration I would recommend using a dripper. It can be as simple as a deli cup with a small hole in the bottom. It should drip at the rate of one or two drips per second.
Overfeeding female veileds constantly especially once they are sexually mature can push them to producing large clutches, eggbinding, prolapses, and even MBD. The main reason for not pushing the temperatures too high in the basking area is that slightly lower temperatures (low 80's F) is to slow her metabolism a bit so that she won't need to eat quite so much and hopefully won't produce large clutches.
How much do you feed her a week?
Live plants are best for veiled chameleons IMHO because they eat vegetation and may try to eat fake leaves if they are in the cage.
As for dusting...its recommended that you dust at most feedings with a phosphorous-free calcium powder to help make up for the usually poor ratio of calcium to phosphorous found in most feeder insects.
It's recommended that you dust twice a month with a phosphorous-free calcium/D3 powder to ensure that the chameleon gets some D3 without overdosing it and leaving it to produce the rest of it from its exposure to the UVB light. D3 from supplements can build up in the system and lead to health issues where the D3 produced from exposure to the UVB light won't as long as the chameleon can move in and out of it.
Its also recommended that you dust twice a month with a vitamin powder that has a beta carotene (prOformed) source of vitamin A. prOformed sources won't build up in the system like prEformed sources will so this is safe and allows you to control the prEformed vitamin A and give it when it's needed.
It's important to feed/gutload your insects well too. I feed/gutload my crickets, superworms, roaches, locusts with a wide and of greens such as dandelion greens, kale, collards, endive, carrots, squash, zucchini, sweet potato, sweet red pepper, etc and a little fruit such as berries, melon, apple, pears.
The feces and updates you showed are not bad but this will show you more...
https://www.chameleonforums.com/threads/poop-101.120171/page-9#post-1341425
Regarding the stuff on your chameleon's nose...it looks like she'd. They do sneeze out salts if they need to....but it is NOT CALCIUM Bekkageary said it was.
Hope this helps!