Rotisserie chicken - (Skip if chicken was shredded ahead for Tuesday.) Take meat off the bone and shred. Use a knife and fork or your hands. (Can be done up to 5 days ahead)
Lemons / Onions / Mint - Prep as directed. Store separately. (Can be done up to 5 days ahead)
Make tzatziki - Dice cucumbers and chop garlic. Combine cucumbers, garlic, mint, and yogurt. (Can be done up to 3 days ahead)
Toast flat breads or pitas on a sheet pan for 4 to 5 minutes.
Heat a skillet or saute pan over medium heat. Add oil and then onions to heated oil. Saute for ~2 minutes.
Add chicken with cumin, paprika, and oregano. Saute for another 2 minutes, just to warm chicken up.
Add vinegar and saute for another 30 seconds and remove from heat. Season with some salt and pepper.
Assemble wraps with chicken, tzatziki, tomatoes, lettuce, feta, and a squeeze of fresh lemon juice. Drizzle remainder of tzatziki over tomatoes and lettuce that cannot fit into wraps and enjoy as a side salad!