Help with Pepper plant

Hey there everyone, 
 
I made an account today because i have been having some trouble with my criolla de cocina plant. I took this plant with me to college and put it in a 2 gallon pot. Previously at home he was in the same pot but in a growbox and was doing quite well. However, I have noticed a decline in his condition since his relocation, mostly with dry, crinkly and deformed leaves that are darker green than they used to be. I had attempted to let a pepper grow on him (which was probably too early), and it was in the later stages of this that I noticed his initial decline in condition. I had guessed that the pepper was draining his nutrients so I snipped it, and supplemented with a makeshift calcium spray from tums, and epsom salt in alternating weeks. I still noticed no improvement and noticed that my previous fertilizers were low in phosphorus, so I added some bone meal, and noticed some improvement, but the growth is still stunted and much smaller than before. I am watering him perhaps every 4-5 days, letting the soil dry out completely inbetween waterings, yet also still have some wicked edema on the underside of some leaves. 
 
I am attaching some pictures below to help the troubleshooting. The white spots on the leaves are leftover residue from the tums calcium foliar spray, which I will likely discontinue using as it seems to have worsened the condition.
 
Does anyone have any ideas on how to help solve this? 
 
https://imgur.com/a/qT5TA
 

I think you may still be overwatering. Sometimes the top of the soil may be dry but the bottom may still be pretty wet.
Cut back on the fertilizers too. 

I agree with President Trump, hrmm that has a nice ring to it lol, anyway, cut back on the watering even more, and stop with the ferts, wait about a week or so, and sprinkle some worm castings on the soil (about a 1/2 tablespoon or follow recommended amount on pkg) then water it. dont add anything after that fertilizer wise., I use long bamboo skewers the kind for making kabobs etc.. to test the soil moister, they easily act as a dipstick you can stick all the way down to the bottom of the pot, just feel the end, it will be damp when you pull it out if the soil towards the bottom is still wet.
Less is usually more in cases like these, if you panic and start dumping in ferts and other remedies it just compounds the problem, so take it easy , ease back for a week or two and give it a small dose of something organic like the worm castings which will help rejuvenate the foliage.

Could be, but I also have a younger plant which I've been feeding on the same schedule and watering the same. The soil mixture for that one may be faster draining though as I think i ended up mixing that one with more perlite and sand.

Medusa264 said:

Could be, but I also have a younger plant which I've been feeding on the same schedule and watering the same. The soil mixture for that one may be faster draining though as I think i ended up mixing that one with more perlite and sand.

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In that case then I suggest the same thing , just back off on being to aggressive, you kinda have to let the plant tell you whats wrong at this point, so stop all ferts only water when needed and monitor soil moister

Would it be advisable to flush the soil with some distilled or otherwise pure water after the soil is completely dry for a while?

old leaves will drop that's normal. it takes time for plant to recover / stabilize. just keep doing what you know is right.
i don't really think spraying plants is that effective. i would just include any nutrients in your watering directly to roots.

Medusa264 said:

Would it be advisable to flush the soil with some distilled or otherwise pure water after the soil is completely dry for a while?

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I don't think you need to flush the soil. Just use plain water for the next few waterings.