You can never have too much of a good thing, so it makes sense that after a successful, award-winning tenure in Boston’s Allston neighborhood, fast-casual vegetarian eatery Whole Heart Provisions (298 Massachusetts Ave., Cambridge, 617-945-8991, wholeheartprovisions.com) has expanded to Central Square. Leading with the concept of crafting accessible, healthy and creative fast food without compromising quality, the new location features Whole Heart’s usual array of options—including carrot and radish kimchi and beets—served on top of rice, arugula or marinated kale, along with new choices like the Asian-themed Kaya (a melange of, among other things, basil, green beans, cabbage, roasted broccoli and peanut crumble) and the Levant, a Middle Eastern-inspired mixture of falafel, eggplant, cucumber, tahini and more.