They look like pimples or acne. As you have pointed out acne increase when you take oily food or high protein diet and decrease when you have a healthy lifestyle. You could use medicines for the problem but since you have figured out how to keep it under control, continue with exercising regularly and avoid oily food, high protein diet (non vegetarian food and protein powder supplements), milk products (milk, cheese, paneer etc. except curd). If you need treatment you could fix an appointment with me or meet a dermatologist near you. Warm regards. Dr. Rajdeep Mysore. Chirag Hospital Bangalore