Heat oil in a large saute pan over medium heat. Add tofu, and cook until well browned on both sides, 6 to 8 minutes. Add garlic and chile pepper, and cook 2 minutes. Raise heat to high, and add sprouts and snow peas. Stir-fry for 3 to 4 minutes. Season with salt and pepper and soy sauce. Remove from heat, transfer to serving dish, and garnish with sesame seeds.