Dice the vegetables.
Clean the chicken and cut into chunks/diced, and season with salt and pepper. Mix and set aside.
In this same pan, minced ginger, garlic, and onion.
Add the peppers, stir and cook for about 2 minutes or until the vegetables crispy. Remove onto a clean plate and set aside.
Mix pineapple juice, rice vinegar, brown sugar, ketchup, soy sauce and the cornstarch. Make sure the cornstarch dissolves.
I forgot to add the cornstarch so I added it after I had poured the sauce.
Turn off the heat and simmer.
Sweet and sour chicken is ready, enjoy!