Nice work reaching your goal and keeping it there. If these moments stay infrequent and your progress holds, it seems fine to allow yourself the occasional treat.
I reached my target weight and have held it steady with a GLP-1 for two and a half years. On rare occasions I still have an off day and pick up fast food for an unplanned fourth meal or late snack, something that happened far more often before starting the shots. Has anyone else noticed this pattern? The good news is my weight has stayed stable anyway.