Mix together chicken, soup and sour cream in a large bowl. Add in Worcestershire sauce, garlic and lemon juice. In another bowl, mix together crushed crackers, poppy seeds, and melted butter and stir until butter is completely incorporated.
Spray a 9 x 13-inch baking pan with non-stick cooking spray. Spread chicken mixture on the bottom and sprinkle with cracker mixture.
Cover pan with foil and bake for 15 minutes. Remove foil and baker for 15 more minutes.
Serve over egg noodles, if desired.
Recipe by Dallas Duo Bakes at http://dallasduobakes.com/2014/03/poppy-seed-chicken-casserole.html