My lunch was boiled spuds, beets, green beans and fire-roasted corn and tomatoes from the garden, and sauteed chicken. like your pork, the chicken had been packaged in plastic at the store. Now I do have to use plastic containers to transport my food to work.
Pyrex makes some really nice containers for that sort of thing. They have freezer safe lids too. Just be careful. Hubby packs his in a lunch bag that’s insulated.