Combine garlic, ginger, soy sauce, honey, ketchup, rice vinegar, sriracha and broth/water in a small bowl and whisk together.
Place chicken and the pineapple in the slow cooker and pour the sauce over top.
Cook on low for 3.5-4 hours.
Remove lid and transfer chicken with a slotted spoon to a dish and set aside.
Whisk the cornstarch (or arrowroot powder) together with the water in a small bowl. Add to the slow cooker (with it still on) and stir into the sauce until thickened. (*see note)
Once thickened, add the chicken back into the pot, stir to combine then garnish with green onions and sesame seeds.
Serve over rice and enjoy!
Video
Notes
*If mixture isn't thickening, transfer to a small sauce pot and stir over medium heat on the stove-top to thicken. Depending on your slow cooker, there may not be enough heat to activate the cornstarch to thicken.**You can add frozen vegetables (broccoli is my favorite) and addition frozen pineapple directly to the slow cooker when you add the chopped chicken back in at the end.