Hi Tasha, my DD doesn't go to daycare and she has dinner tantrums too.
I moved it later which helped a bit, also try to get something ready early in the day so I just have to put in the oven later, but not always possible. I also make sure she has a savoury afternoon tea (she's a sweet tooth and would eat crap all day if she was allowed)
She even cracks it when I am preparing dinner early and yells 'no deedee, no deedee!', even if it's 11am!!
Hate to say it but it's also progressed to 'no bath or shower' and pretty much no anything if she is in a bad mood lol.
I just try and go with the flow, but easier said than done, it's COMPLETELY frustrating.

If she is having a 'meal' for lunch, maybe just give her a 'tasting plate' for dinner, little bit of carb, little bit of veg/fruit, little bit of meat, then she can have some control over what she eats. Alternatively, just do what I do when I am desperate and give her a bowl of plain pasta lol