Heat the vegetable oil in a large skillet over medium-high heat.
Add the cubed chicken and cook for 10-15 minutes, stirring occasionally, until the chicken is fully cooked and reaches an internal temperature of 165°F.
While the chicken cooks, whisk together the bourbon, soy sauce, chicken broth, ketchup, brown sugar, garlic, and ginger in a small bowl.
Once the chicken is cooked, pour the sauce mixture into the skillet. Reduce the heat to medium-low and simmer for 3-4 minutes, allowing the flavors to combine.
In a small bowl, stir together the cornstarch and water to create a slurry.
Pour the slurry into the skillet and stir until the sauce thickens and coats the chicken.
Serve the bourbon chicken over rice and garnish with sliced green onions.