Can teenagers develop angina?

Unlikely. Yes, it is possible but very rare and generally the result of a structural problem, like an abnormal origin of one of the coronary arteries or coronary artery changes after an earlier episode of kawasaki dz. Angina from cholesterol plaques is very rare in adolescence, except in homozygous familial hypercholesterolemia, where the cholesterol may be several times nl levels (e.g., 700 or 800 ng/dl).
Angina. Teenagers can get angina. It is rare unless there is a strong family history of early heart disease, teen is obese and has coronary artery disease already, teen is doing drugs (cocaine) and having a heart attack, or has an abnormal coronary artery that is getting occluded (closed).