Preheat oven to 350°.
Boil the potatoes until slightly undercooked.
Drain.
Scrape the potatoes with a fork to score the potatoes.
This allows the potatoes to absorb the vinaigrette.
Sprinkle with salt and pepper.
Set aside.
While the potatoes are boiling, season the chicken with salt and pepper on both sides.
Heat a few tablespoonfuls of olive oil in a large skillet, Dutch oven or an ovenproof casserole dish over high heat.
Add chicken and brown well on both sides, about 10 minutes for each side for really large chicken breasts—about 3 minutes per side for thighs.
Remove pan from heat, and drain off fat. (See note below).
Place potatoes around the chicken.
Pour the can of crushed or diced tomatoes around the chicken and potatoes.
Sprinkle meat and veggies with salt and pepper, as desired.
Drizzle the Herb Vinaigrette over all the chicken and potatoes.
Place the cherry tomatoes on top.
Bake casserole for 45 minutes or until chicken is cooked through.
(This will take less time for chicken thighs – 20-30 minutes).
Remove casserole dish from oven and sprinkle mozzarella cheese over top.
Return casserole to oven and bake an additional 5 minutes until the cheese is melted and golden.
Allow casserole to stand 5 to 10 minutes before serving.
Garnish with fresh basil leaves.