Reduce oven temperature to 300°F (148°C).
In the bowl of a stand mixer fitted with the paddle attachment or a large mixing bowl using a handheld mixer, beat the cream cheese and sugar on low-medium speed until smooth, about 2 to 4 minutes.
Scrape down the sides of the bowl. Add the eggs one at a time, mixing slowly to combine after each addition. Next, add flour and dry instant banana pudding. Continue to mix on low until well combined. Be sure to use low speed to reduce the amount of air added to the batter, which can cause cracks. Scrape down the sides of the bowl as needed to make sure everything is well combined.
Add the mashed banana, and mix to combine. Finally, add vanilla extract, lemon juice, and zest. Mix on low until thoroughly combined. The mixture will be a little lumpy because of the mashed bananas.
Pour the cheesecake batter into the crust.
Place the springform pan inside another larger pan. Fill the outside pan with enough warm water to go about halfway up the sides of the aluminum foil. The water should not go above the top edge of the aluminum foil.
Bake for 90-100 minutes or until the center is set but still jiggly.
Turn off the oven and leave the door closed for 30 minutes. The cheesecake will continue to cook but slowly begin to cool as well.
Crack the oven door open for 30 minutes to allow the cheesecake to cool slowly.
Remove the cheesecake from the oven and water bath wrapping and refrigerate until cool and firm, 5-6 hours or overnight.