Dice the chicken, onion, and bell pepper into similar sized pieces.
Drain the pineapple chunks and place the juice in a separate bowl.
Add the chicken, onion, and pineapple chunks to the bowl of a slow cooker.
In the bowl with the pineapple juice, add the cornstarch and whisk until thoroughly combined.
Add the honey, soy sauce, brown sugar, ginger, and garlic.
Stir to combine.
Pour over the diced chicken mixture in the crockpot.
Cover and cook on high 2-3 hours or low 3-4.
During the last 30 minutes of cooking or 30 minutes before serving, add the red bell pepper and stir.
When finished cooking, serve and enjoy!