This is a decently common problem some of my students run into. Follow the steps I've written out below to fix this issue!
Problem: My screen is very zoomed in on my Raspberry Pi!
To fix the size of your screen:
1. Open LX Terminal
2. Type:
sudo nano/boot/config.txt
and press enter
3. Use arrow keys to find "hdmigroup" and "hdmimode"
4. Change "hdmigroup" to 82 and "hdmimode" to 2
5. Press ctrl + x
6. Press y
7. Press Enter
8. Type:
sudo shutdown -r now
(this will restart your RPi)
That should do it. If you run into any issues with this please let me know!