Jenrry Mejia spent much of the early part of the season sitting in idle in the Mets’ bullpen. Now that he’s pitching as a starter again for Double-A Binghamton, the organization is getting a look at what he can do when he’s full throttle.

The Mets’ top prospect threw seven shutout innings for the second straight start for the B-Mets tonight in their win over New Britain. The 20-year-old right-hander allowed three hits, struck out four and walked three.

Since returning from a strained pitching shoulder that kept him out for a month, Mejia has gone 2-0 with a 1.13 ERA, striking out 21 and walking 10 in 24 innings. He’s allowed four runs (three earned) since coming off the disabled list, and all of them came in the same start.

tbontemps@nypost.com