Key Lime Pie–Inspired Overnight Oats

Name: Key Lime Pie–Inspired Overnight Oats
Ingredients: 2 cups old-fashioned rolled oats; 2 cups whole milk; 2 tablespoons chia seeds; 1 tablespoon sweetened condensed milk; 2 1/2 teaspoons grated Key lime zest , divided; 1/4 teaspoon salt; 1/4 teaspoon vanilla extract; 1 ( 5.3 - ounce ) container low-fat Key lime–flavor strained (Greek-style) yogurt; 2 tablespoons fresh Key lime juice (from about 5 Key limes ), plus 4 Key lime wedges for serving; 1/4 cup graham cracker crumbs; 1 tablespoon unsalted butter , melted; 2 teaspoons granulated sugar