Remove the chicken from the oven (if you're baking) between 23-30 minutes,
Coin your cucumbers, and coat them in the sauce. Drizzle the remaining sauce on the chicken breasts.
My comments: I made quick skin-on garlic smashed potatoes (super simple, and I'll post the recipe soon) to accompany and on a whim I added some of the sauce to the potatoes! Match made in cilantro heaven! I would make this sauce in the future, simply to add to potatoes!
I would, if making again, add more lemon juice, up the Thai chili sauce, and cut down on the jalapeño...I might also add a little diced shallots and refrigerate the sauce for more moments in the fridge before using.