yes this is why having a fine balance is what you need, from your ID if you want to breed feeders you need to A/ Keep it simple B/ Find the right balance which at this point you do neither.
Supplement are not always a good thing finding the right food for your animals to thrive is, sometimes having a little too much of something such as protein can be a harmful as not getting enough.
As a feeder breeder you also want to keep you cost down and trust me offering toffu, veggies, cheese not only will be unrealistic if you want to produce thousands of feeders, but it will also likely cause nutritional deficiencies, breeders choosing veggies and cheese (high in fat) over nutritious food that will sustain them and their litters, just like with any other animals or even human they do not always chose what is best if offered a wild variety it's your job to make sure their diet is sound and can be sustained in the long run.
I have done this for a decade and produce several thousands of feeders each year and the extras here are rare, on occasion they get hard boiled eggs, and they get bones from whatever we eat (usually it's turkey around this time of the year).