You might want to consider a valance over both the windows that treats these two window as one. That would hide the roller shades. You could have a this made in the same fabric as you have used for the panels in the other areas of the house. I would lean towards the roller shads instead of the panels in these two room since you have a small space to the side of the smaller window the panel may cover up more of the window then you want to.

There's not enough room inside the nook for curtains. You could do nice roman shades. I've bought some for bedrooms on this site that are quite nice and budget friendly. Let me know if you'd like a link. I guess you could do sheers over the shades, but hang them outside the nook? Not sure if that would look strange, but maybe you could mock it up to see.

I hate indoor shutters they are heavy looking, block light and view and there are so mnay other choices. Use solar shades to control heat, and UV rays they allow you to keep the view and give you daytime privacy . I mix them with drapes or roman shades for night time privacy. I think all the window coverings that can be seen together shoudl be at least the same fabric so I often do drapes for the LR and roman shades for the kitchen but the same fabric.

@HU-36691265 - Sorry for confusion - I can clearly see the middle windows are separate! it will look great doing inside mount with a single shade for each window! It would also look great outside mounted but you won’t know your options until you find out how much space the header takes for the style of shade you decide on. It might be really tight in space between molding top & soffit on that right window. If you’re needing window treatments for your entire house, it’s worth it to have someone come to your house. @Flo Mangan mentioned Smith and Noble & there are others - Budget Blinds etc. They all have many styles of shade & blinds & are really helpful. You might get a new house discount if you ask& are doing all the windows. @Lorraine Blasetti - Drapes have been discussed at length & don’t work in this situation! The OP prefers drapes too but has wisely moved on! 😊 Blinds also come in fabrics i.e. Silhouettes etc.