Good for you, Lauren, for carrying through with the whole thing! Give yourself a huge pat on the back.
I wouldn't roast a skinless chicken, it would probably become jerky-on-the-bone. Unless you might be able to get away with it in a cooking bag, but still, I suspect it wouldn't turn out very well.
Those birds were young enough to fry or grill, you could cut them up and try that.
Or...
One of our favorite recipes is Buttermilk Chicken, and it would work great with a skinless bird. The quick and short description is dredge the pieces in flour, and pan fry until brown, (season with salt and pepper wile browning) but not cooked all the way through. Arrange the pieces in a baking dish, (I use a big rectangular Pyrex one, about 2 inches deep) and cover with about 3 cups of buttermilk. You want the chicken about halfway submerged, not fully submerged. Sprinkle with a little oregano. Bake at 350F for 30 minutes, take it out, turn the pieces, bake another 20-30 minutes. You may need a spatula to scrape under each piece to turn without losing the coating.
We love this with hot, buttered, homemade biscuits (and honey!) and mashed potatoes, (and milk gravy made with the crunchies and part of the grease in the pan from browning the bird) and whatever green veg you like. The buttermilk coagulates and browns into really tasty, tangy, little browned bits that are wonderful on the potatoes, and keeps the meat from getting dry. Better than ordinary fried, even though it's a little more work, it's worth it.
This is a real splurge of a meal, calorie-wise, but so worth it! Just not what you want to eat everyday, more of a special occasion meal. Like, "Oh, I successfully processed these chickens, let's celebrate!"