Buy some tortillas, make some pico de gallo, or salsa verde (or buy it) and whatever else you like on a taco and let people put together their meal. Or, you can cook up quesadillas, but that’s way more work. You do need to heat up the tortillas though, best if they are grilled, but you can just do it in a regular nonstick pan.
Throw the chicken into a paella. Saffron rice, shrimp, sausage, the chicken, etc. The problem with this idea is you create more food, and it will only be good as long as the chicken is good, because it’s mixed together. By good I mean ok to eat.
I like chicken in pasta. Either with a red sauce and melted cheese, or you can do olive oil, oregano, salt, a little garlic, and roasted veggies.
Chicken pot pie is a good idea too, I saw that above.
Is there drippings leftover from the chicken? I love a mushroom chicken I make with cream of mushroom soup, but it’s better if the chicken cooks in it. You can still do it though. Cream of mushroom soup, squeeze half a small orange, a lot of sliced mushrooms, a little garlic, and a little chicken broth since you don’t have the drippings. You can add white wine if you want. Cook on the stove so the ingredients marry, maybe 5–10 minutes. Serve over white rice. I like peas or green beans on the side.