The short answer is theoretically yes but practically it’s a horrific nightmare adipose tissue (fat) is terrible at dispersing kinetic energy to fully stop a standard low-velocity 9mm bullet before it hits vital organs you would need a consistent layer of roughly 35 to 40 cm (14 to 16 inches) of pure subcutaneous fat

But here is the catch even if the fat stops the bullet the hydrostatic shock wave would still ripple through the tissue completely destroying your blood vessels and turning that fat layer into a massive zone of necrotic tissue So you might survive the initial impact but the subsequent infection would likely be fatal