This looks similar to the issue I had with a large model I printed.
Looking at the second picture it looks like there is a warp of the lower right edge:
If the model bends upwards due to warping it gets closer to the printhead and that will look exactly like it does on your print. There’s too little space between the print and the hotend and it will look like massive overextrusion. At my case it even lifted the plate from the magnetic bed. Depending on the material you use you might have to play with temperatures and cooling to get warping under control or reduce strength of the model.
