My ex keeps giving her crap

Once he gets his own space you'll have no say in what he feeds her, I'd leave this one.
Just make sure she eats nice and healthy with you.

I agree with Jai, you can't really control what he does and I don't think you should need to make him see that he shouldn't do that, as this is obvious. There's no way he thinks adding salt to salty food is the issue. I think when parents separate sometimes people do things to provoke the other and if he sees it bothers you he will just do it more or say you're controlling etc to get a rise. If he knew you were going to make food and bought food regardless he knows what he is doing...

It comes down to parenting styles. There’ll be things you do that he won’t agree with as well. You’ll just have to grin and bear how he chooses to feed his daughter in his time, rather than an argument coming from it. As long as she’s eating well in your care, then every so often won’t cause too much harm for her whilst she’s with her dad

This can actually be a big problem. If your ex eats junk food/shit a lot, odds are he will feed his child the same way too.

My best friend was step-mother to her ex’s older daughter. She was 5 when they first met and poor thing was already overweight. Her mum was plus size, her mum before her the same. She fed her daughter junk food, lots of snacks etc. At age 8, she was in an adult woman’s size 16.

My friend is very healthy and every meal she made her when she came to stay - the stepdaughter barely ate. Instead texted her mum to send her money for McDonald’s etc. So even though she stayed with her dad 3 nights a week, it wasn’t enough to counteract the influence of the mother. The child was bullied badly at school due to her weight.

OP - does your ex generally cook fresh/healthy meals?

Is he the spiteful type? As in he’d purposely feed your child junk food to annoy you?