For those still reading, potassium can be supplemented by sprinkling potassium chloride salt (available in the cylinder shakers with the rotating perforated plate, just like other table salt) directly onto foodstuffs per taste and habit, and by eating beets, potatoes, figs, avocados, yams...a long list. For animal proteins, chicken, fish.

Just be aware that, while you may have a temporary hypokalemia, you can swing it the other way and put your kidneys in a bind having to rid yourself of a dearth of the stuff in a matter of hours, so be careful. Follow the advice of a competent authority such as a family doctor, dietician, etc. You were hypokalemic maybe for reasons other than missing it in your diet. Shouldn't everyone concerned know why?