Dietary Fiber and Time Restricted Eating

Inclusion Criteria: * ≥18 age * Body mass index ≥30 kg/m2 * Dietary fiber intake ≤15 g/day * Compatible cell phone for use of ecological momentary assessment app Exclusion Criteria: * Self-reported diagnosis that precludes fiber intake (e.g., inflammatory bowel disease) * Food allergies or intolerances that limit ability to engage with the intervention * Positive screen on the SCOFF eating disorder screener39 * Current self-reported use of GLP-1 receptor agonists * Currently pregnant or breastfeeding, or planning to become pregnant