Can I Delete Specific Apps Through Terminal while booted to recovery or an os installer?

Using the Terminal app. Look in /Volumes to see if the name of your normal desktop hard drive is there.

If so cd to /Volumes/< Insert your home volume name >/Applications

That will take you to the applications folder of your desktop. Where you can remove unneeded items.

If not present, you will need to mount it. If using a standard disk with a recovery volume you can issue the following command (with root permission)

mkdir /Volumes/mydrive
mount /dev/disk1s5 /Volumes/mydrive
cd /Volumes/mydrive

an "ls" should show you the Applications directory where you can remove the needed items.