Hmmm
Have you fertilized it at all?
Carol

I had this problem at the beginning of the summer. Mine were water logged badly. I used Neptunes Harvest soil and it was way too heavy. Even tho I had runoff at the bottom they were waterlogged due to poor drainage and incorrect soil . This resulted in an iron defficiency that I corrected with an additive. Most importantly I opened the drainage channels and on a few, I actually had to repot and remove the gunk that was choking my roots. They recovered nicely. I have found that my potted roses are very vulnerable to my mistakes. More than in ground. You can fix this! My leaves looked EXACTLY like yours.

And make sure the built in tray is not occluding the drainage holes. I have seen some that actually will not drain until those are popped off.

yikes, thanks!
-- I had not fertilized until now as I thought the original soil mix had a lot of starter nutrients. Also now I have a bit more time and realized it was time to fertilize!

-- Will seek to improve drainage ASAP! Thank you!

It's easy to be confused since both over watering and under watering will produce the same symptoms. But my bet is this is over watering because of the heavy soil and the tray on the bottom of the pot. If there is any way to take off the tray do so and if you repot find a lighter potting soil.

The large brown chevron spots are probably from cercospora fungus where the leaf was infected weeks or months ago. This is not a big problem. Just pick off the leaflets.

Some of the leaves look sunburned, perhaps from too much heat and not enough water? A sharp closeup of one of the pale leaves could help us. A balcony in Texas could get way hotter than the environment where you are used to gardening.

As seil said, it can be hard to tell whether a plant is suffering from too much or too little water. Water larger pots 2 gallons at a time and let the surface dry slightly before watering again, maybe every two days. They might want as much as 8 gallons a week in very hot weather.