What foods did your dragon used to eat?
Variation is good. Like humans, beardies get bored when offered the same thing every single day. Try mixing in something new, for a different taste. Or, if your dragon is old enough to have them, scatter a few appropriately sized phoenix/wax worms onto the salad. That should get her interested! Mealworms could work too, though they're not as nutritious and harder to digest
I like to mix colourful veg into the leafy greens, to draw the lizard's attention. Baby sweet peppers, for example, and very occasionally slivers of carrot or tomato. Sometimes fruit, as a treat; strawberry and mango were Ginger's favourites. She liked pansy flowers, as well: they come in many vibrant colours, so I used to rip up the petals and mix those in the salad. That said, Ginger was always a voracious eater! Yellow was her favourite-coloured food - which led to an interesting incident with a dropped rubber glove :lol: