She's insectivore. There's no need to force her to eat fruits, so don't worry about her behaviour. Fruits, by the way, can bring forward dysbacteria due to high sugar content. There are some species eating flowers and plants from time to time, but Trioceros jacksonii isn't one of them. Enjoy your chameleon eating insects and don't worry if an insectivore animal won't eat frugivore food.
ok thanks for the reply just i saw a few ppl say it was good for her nutrition and on some care sheets but ill take your word but also she has a hard time eating her crickets she sees them but rarely takes them idk why i think its because i gave her 3 meal worms yesterday (afterwards i found out they were bad for her) so idk what to do now she is drinking water and im gettin g her out her 20 gallon tank into a 16x16x30 on monday or tuesday
You may be thinking fruits are good to gutload the insects, before you feed them to your jackson. Veileds are the only ones I've read about eating fruits and veggies, and even then only some do.