Heat Oil In A Skillet Over Medium Heat, And Cook Chicken Thighs Just Until Evenly Browned On All Sides. Place Thighs In A Slow Cooker. In A Bowl, Mix Honey, Soy Sauce, Ketchup, Garlic, Ginger, And Reserved Pineapple Juice. Pour Into The Slow Cooker. Cover, And Cook 4 Hours On High. Stir In Pineapple Tidbits Just Before Serving. Mix The Cornstarch And Water In A Small Bowl. Remove Thighs From Slow Cooker. Blend The Cornstarch Mixture Into Remaining Sauce In The Slow Cooker To Thicken. Serve Sauce Over The Chicken.