Eighty-five youths with T1D and 176 controls aged 8–19 years were asked to complete online questionnaires (ChEAT and EAT-26) measuring disordered eating behaviors (DEBs) during (baseline) and after (8-month follow-up) the lockdown. DEB symptoms in all participants (especially younger than 13 years), glycemic control, and zBMI were found unchanged from baseline to follow-up (all p > .05). After 8 months, the ChEAT/EAT-26 critical score frequency decreased significantly in controls (p = .004), as was the score for the ChEAT/EAT-26’s Oral Control subscale in both groups (T1D: p = .005; controls: p = .01). Participants with T1D, especially those older than 13 years, had higher ChEAT/EAT-26 Dieting scores (p = .037) and lower ChEAT/EAT-26 Oral Control scores (p = .046) than controls. Unchanged DEB symptoms suggest that the COVID-19 restrictions did not significantly affect participants’ eating behaviors and that a general adaptation to the challenges of lockdown and other pandemic containment measures occurred in both T1D and control participants.