No, it's not normal
My hand is typically a bit shaky when I hand feed my chams and they never miss.
Bugs usually don't stay perfectly still in nature.
Typically, the problem is caused by nutritional deficiencies and, if you correct those now, before the deficiency worsens, then she stands a far better chance of leading a long, healthy life with you.
I looked at your past posts and saw that your cham was eating sand.
Maybe that was her attempt to compensate for something that she's missing in her diet.
Plenty of times people make some or all of the following mistakes:
No UVB bulb or using an old UVB bulb(which prevents calcium from being absorbed)
Not feeding feeder insects a nutritious gutload (chams are what they eat)
Feeding only 1 kind of insect
Too much, too little or the wrong kind of calcium or vitamin supplements
Wrong temperatures
I know it seems like alot, but please post the answers to the How to ask for help form.
If something is wrong, far better that someone spots it and helps your cham, than not.
https://www.chameleonforums.com/how-ask-help-66/
I'm grateful for these forums because the good information posted by some has enabled my chams to remain healthy.
If I had only followed the instructions that the pet store had given, they might not have survived.
Sandrachameleon has some very good info about tongue problems in her blog:
https://www.chameleonforums.com/blogs/sandrachameleon/232-tongue-troubles.html