Season the chicken with salt and pepper.
1 1/2 pounds boneless, skinless chicken, salt, pepper
Heat 1 tablespoon of the olive oil in a large skillet over medium-high. Add the chicken. Cook, stirring often, until just cooked through, about 5-7 minutes. Transfer the chicken to a plate and return the skillet to the stove top.
2 tablespoons extra virgin olive oil
Lower the heat to medium and add the remaining 1 tablespoon of olive oil. Add the peppers and onion. Cook until softened, about 3-5 minutes.
2 bell peppers, 1 onion
Stir in the garlic and pineapple chunks and cook another for another minute. Transfer to the plate with the chicken and return the skillet to the stove top.
2 cloves garlic, 1 20 ounce can pineapple chunks in juice
In a small bowl, whisk together the barbecue sauce, brown sugar, rice vinegar, coconut aminos (or soy sauce) and ground ginger until well blended.
1/2 cup barbecue sauce, 2 tablespoons brown sugar, 2 tablespoons rice vinegar, 2 tablespoons coconut aminos, 1/2 teaspoon ground ginger
Carefully add the sauce to the skillet and bring to a simmer. Cook, stirring often for 2-3 minutes.
Add the chicken and vegetables back to the skillet and cook an additional minute or two to rewarm.
Serve over rice. Garnish with green onion and/or sesame seeds, if desired.