Are there an infinity of solutions to this equation involving prime numbers?

Consider this equation where $ p $ are prime numbers:

$ (p_k) ^ 2 + (p_ {k + 1}) ^ 2-1 = (p_ {k + 2}) ^ 2 $.

One possible solution is given by $ p_k = $ 7, $ p_ {k + 1} = $ 11 and $ p_ {k + 2} = $ 13.
Do you believe that there are an infinity of solutions?
Or many solutions?