Your side profile includes the shape of your skull, something which is visible from any angle. My chin is also recessed, and when I smile, my cheeks move upward and forward, and chin moves backwards, into a fucked up beta faggot smile. When you smile your chin should come past your lower lip or be in line with it at bare minimum. If it doesnt, youre a beta incel faggot like me.
Your side profile is what highlights your skull more than anything else. It is by any objective standard more important than front profile in terms of attractiveness, dont delude yourself. A strong, square jaw and chin are integral to good looks, and there are ZERO truly handsome men out there without a good square masculine face. Zero. Men who are liked for a childish or chubby face or whatever are seen as at absolute best "Cute", but NEVER sexually desirable.