New here. Need some advice. pics

[Nick022889]

I noticed my hair thinning at the crown while I was overseas in Afghanistan last year. I figured it was just my follicles getting clogged because the lack of showers we had. I attached a picture so you guys can get a better look. I started taking a biotin vitamin everyday along with Nizoral shampoo every other day hoping for some improvement. It's not to drying since I follow with Nioxin conditioner. Do you guys think it could also be lack of nutrition? I've been eating one meal a day(usually take out) for the past few months because our defac here on base in the states is terrible because its soldiers making the food. When we had civilians cooking it it was really pretty bomb. Also I notice an itchy crown. Any advice would be great

[Nick022889]

Also I'd like to add all the hair that sheds in the shower has small white bulbs on the end if that means anything. I'm hoping that it's just TE and once i get my normal diet and nutrition back it should come back.