Gingered Pineapple Chicken

4 to 5 boneless chicken breast halves, cubed
1 bunch green onions, with about 3 inches of green sliced 1/2 inch
1 8 ounce can crushed pineapple, undrained
1 tablespoon finely chopped crystallized ginger
2 tablespoons lemon juice
2 tablespoons soy sauce
3 tablespoons brown sugar or honey
1/2 teaspoon garlic powder

Combine all ingredients in the crockpot; cover and cook on low for 6 to 8 hours. Serve over rice or flat noodles.