This wasn't a very wise experiment -- I don't recommend it. Injected, KCl can kill you (and is used for executions). I don't know the fatal oral dose, but it's so orally unpleasant you'd probably be vomiting before getting there.
I use it instead of table salt to season food. (But still use conventional salt in cooking). The first time I used a bit too much, and everything tasted... off. Since then I've backed off, and it's ok.
I'm shocked at how much weight I've lost (approximately 20 pounds, but I am morbidly obese)
Probably the reason most OTC potassium supplements (ones sold in the US at least) have FAR less potassium in a single tablet than a banana.
It's basically impossible for a adult with healthy function to overdose themselves on potassium with bananas (or coconut water, or avocados) before getting full, but with the tablets it would be much easier to abuse them if they contained even 1 banana's worth per tablet.