Monty Batch Exporter is a Blender 4.2+ extension that replaces repetitive one-at-a-time exports with a single batch operation.
blender "scene.blend" --background --python-expr \
"import bpy; bpy.ops.batch_exporter.load_config('EXEC_DEFAULT', filepath=r'config.json'); bpy.ops.batch_exporter.export('EXEC_DEFAULT')"