Grease a 6 quart crockpot with cooking spray, then set aside.
In a medium sized bowl, whisk together pineapple juice, brown sugar, soy sauce, hoisin sauce, minced garlic, and minced ginger.
Pour half of the sauce into the prepared crockpot, top with chicken thighs and peppers, then pour on remaining sauce.
Cover and cook on LOW for 7-8 hours or HIGH for 3-4 hours.
Remove chicken and set aside.
In a small bowl, whisk orange juice and cornstarch together until smooth, then slowly whisk into the sauce until well combined.
Cut the chicken into large chunks and stir back into crockpot.
Cover and cook on HIGH for an additional 30 minutes.
Taste and re-season, if desired, then serve over rice with optional garnishes and enjoy!