Well... personal opinion... it looks really bad.
Especially the first images, but overall all of them would be extremely hard to read, not only because Instagram/Facebook lowers down the quality of image, but also the fact that many people won't be on Instagram through their PCs, they'll likely be on their phones so text is not going to be readable, and panels looks way too pressed against each other it's not even possible to tell what's the order or what's going on.
Yes, I took the time to see the images from my phone, and even if I don't have the limitations from Instagram's overlay, it still its hard to read
My personal recommendation would be:
For the panels you've already done, crop them individually and make new images with them, then you'll have to redraw some areas, fix some speech bubbles and such. If you have the PSD/CLIP file with separated layers then it'll be easier.
For future chapters, try to not overlap panels so much, keep them in separated layers then arrange them as you like for the "Comic Page" format without risking having to redraw for the Social Media format.