Cook rice mix according to package directions; set aside.
Melt butter in a Dutch oven over medium-high heat. Add onion, and saute until tender. Add flour, and cook, stirring constantly, 1 minute. Add broth, and cook, stirring constantly, 1 to 2 minutes or until mixture is thickened and bubbly.
Stir in rice, chicken, and next 6 ingredients. Spoon into a lightly greased 11- x 7-inch baking dish. Top with almonds.
Bake at 350° for 15 to 20 minutes or until thoroughly heated.