Hi Rabbi,
I trust all is well.
I’ve already kashered my kitchen for pesach.
- Could I eat store-bought challah or pita for Shabbat Hagadol? (Pita is less messy)
2. Would I need to kasher anything again? What should I watch out for?
Thanks!
Shabbat Shalom
Eileen Missry 
T Aharon 
Barbara Hidary