That sounds delicious! But have you ever tried a "spinach bed" so it could give your fish a stronger taste?
What I do is place olive oil on the bottom of the pan and then cover the whole pan with spinach. Then I season both sides of my tilapia with garlic, salt, and pepper and then place it on top of the spinach. After 40 minutes of baking the fish is ready to eat. At this point the spinach looks soggy and charred at the same time but its okay since the fish absorbed all the flavor!
If you try this and it blows your mind like I think it will, you can thank me later :)
that's sounds like a awesome dish! Thanks man!