Place a large skillet over medium heat and add in the bacon. Cook bacon for 3 minutes on each side or until cooked to your crunchy preference. Remove with a slotted spoon and transfer to a plate lined with paper towel.
Leave only 1 tbsp of bacon fat in the skillet and add in the garlic. Cook the garlic for 30 seconds and then add in the red pepper flakes, shallots and shrimp. Season with salt and pepper and let shrimp cook for about 2 minutes, flip over, add in the lemon juice and zest and cook an additional two minutes. Remove the shrimps with a slotted spoon and set aside.
In the same skillet, add in the zucchini noodles and toss to combine, for about 2 minutes and then add in the shrimp and crumble in the bacon. Toss to combine. Divide onto two plates and garnish with chopped parsley.
Optional: Throw in 1/4 cup of grated Parmesan cheese to the noodles before adding in the shrimp for extra flavor.