Preheat the oven to 350 degrees F (175 degrees C). Grease 8 muffin cups with cooking spray.

Blend bacon, eggs, salsa, and almond flour together in a blender on medium speed until thoroughly combined, about 30 seconds.

Pour mixture into prepared muffin cups.

Bake in the preheated oven until a toothpick inserted into the center of a muffin comes out clean, about 30 minutes. Let cool 10 minutes before serving.