I'm going to be starting keto again for the first time in 7 years and am looking for a way to replace my current meal prep. I do this because it's the easiest way for me, and I can be accurate with my calorie / macro count. My current method:

Giant stock pot, put some water in, fill with chicken breast. Slow cook for 4-5 hours, then break up into shredded chicken in the same pot. Add pack of mixed veggies, and pack of frozen broccoli, let cook. Add 2 packages noodles that cook in the water, when they are 1/2 way done, I add a whole head of cabbage. Everything is cooked I evenly distribute it into 20 meal prep containers. This gives me food for 5 days (4 packs a day) 2 protein shakes a day. I just literally eat the same thing every day with different hot sauces on top. This comes out to exactly 1,525 calories per 4 containers (1 day). Add in the protein shakes and I'm at 1,800 calories exactly which is a 500 calorie deficit to cut with.

How can I do roughly the same thing with keto? Adding that many mixed veggies would be too many carbs because they have peas and carrots etc. And obviously noodles are out. Without those 2 things, that's 1/2 the bulk of the food gone, which is already a small amount of food. What can I do here without just replacing the veggies and noodles with butter or oil or something?