Jaime Reyes sure likes to show of his scarab doesn't he? It seems that he likes to whip it out whenever he gets the chance. Which means he is shirtless a lot, *cue fangirl squee*.
Blue continues his reign as the most bare-chested member of the team this season, a title previously held by Superboy in Season 1 (sidebar, why doesn't Conner walk around shirtless anymore? We want some Superboy-related fanservice, dammit! Thought we are very grateful for the Blue Beetle beefcake.)
These screencaps are from two very brief scene from two different episodes. The first set is from "Cornered" in which Jaime explains to Nightwing and the Justice League what the deal is with his scarab. He emphasizes the point by retracting his armor and showing it off to them.
The second set is from "Runaways" in which Blue gives his backstory to some meta-human kids. He semphasizes his point by taking of his shirt and showing of his scarab.