Preheat Oven and Grease Pans - Preheat the oven to 350 degrees Farenheit. Grease both of the 9-inch cake pans generously with cooking spray.
Make Cake Batter - In a large bowl, use an electric mixer to combine the cake mix, banana, pineapple, eggs, cinnamon, vanilla extract, and lemon extract. Beat the mixture for 30 seconds at low speed, scraping the sides of the bowl if needed. Then, increase the speed to medium and beat the hummingbird cake batter for two minutes.
Bake the Cakes - Carefully pour your cake batter evenly into the two greased cake pans. Bake the hummingbird cakes for 25-30 or until a toothpick you insert into the middle comes out clean. Allow the cakes to cool in the pans for 10 minutes before flipping them onto the wire rack to fully cool.
Make the Frosting - Beat the cream cheese, butter, and vanilla extract at medium speed in a large bowl using an electric mixer. Then, gradually beat in the confectioners' sugar until smooth.
Stir in the yellow food coloring until it is fully incorporated. Then, take one cup of frosting and mix it with chopped pecans in a small mixing bowl.
Decorate the Cake - Frost the first layer of cake with pecan frosting. Then, place the second layer on top and frost the sides and top of the cake with the regular frosting.
Take the coconut and mix it with blue food coloring in the Ziploc bag. Gently place the hummingbird cookie cutter on the middle of the cake and place the coconut in the cutter. Carefully remove the cookie cutter from the cake.