PETG finish changes mid print - Troubleshooting - Bambu Lab

What would cause this kind of finish change in the middle of a print?

PETG Issues - Bambu Lab X1 Series - Bambu Lab Community Forum

SOLVED] Bad quality when printing PETG - Bambu Lab X1 Series - Bambu Lab Community Forum

PETG Issues – How do I print this? (Printing help) – Prusa3D Forum

Bambu Lab X1 Carbon PETG Settings - Get Perfect Prints

P1S Issues with PETG while PLA prints flawlessly : r/BambuLab

Bambu Lab PETG-CF Filament 1.75mm - 1kg –

Asking for help with PETG and Printer config - Troubleshooting - Bambu Lab Community Forum

What am I doing wrong with PETG?? : r/BambuLab

Print has voids and gouges - Troubleshooting - Bambu Lab Community Forum

Bambu Lab X1 Carbon PETG Settings - Get Perfect Prints

Delamination (SLA)

Air Jordan 1 Mid SE Brown Elephant Print DZ4129-102

Mid-century Modern Wall Art Custom Size Art Print, Mid Century Art

Static Medium

Ender 3 S1 Pro Mid-Print Filament Change - Now You Can!