Preheat oven to 375°F (190°C).

Season the chicken with salt and pepper. In a skillet, heat olive oil over medium-high heat and sear the chicken for 2-3 minutes per side until golden. Remove from heat.

Make the sauce:

In a saucepan, combine mandarin juice, soy sauce, honey, vinegar, garlic, and ginger. Bring to a gentle simmer.

Mix the cornstarch and water to make a slurry. Stir it into the sauce and cook for another 2–3 minutes until thickened. Remove from heat.

Bake the chicken:

Place the seared chicken in a baking dish.

Pour the mandarin sauce over the chicken.

Bake uncovered for 25–30 minutes or until the internal temperature reaches 165°F (74°C).

Garnish and serve:

Top with mandarin segments, green onions, and sesame seeds if desired.

Serve with jasmine rice, quinoa, or steamed vegetables.