I'm a guy, my nipples have gotten bigger recently, just curious if this is normal?

Nipples: Your nipples may be enlarging because of the hormonal influence of puberty

Areolar enlargement.: If you are unsure, it won't hurt to have your PCP examine you and make sure it isn't anything hormonally unusual. It is probably either genetically determined or can be increased fat or glands underneath. Do you feel lumps underneath the nipples? Any discharge? Using hormonal supplements or perhaps a high soy-based diet might contribute.