STIR 1 cup of the boiling water into each flavor dry gelatin mix in separate bowls 2 min. until dissolved. Pour each flavor into separate 8-inch square pan. Refrigerate 1 hour or until set.
MEANWHILE, mix evaporated milk, condensed milk, peaches and lemon zest; refrigerate until ready to use.
CUT gelatin into 1/2-inch cubes; place in large bowl. Add milk mixture and pecans; mix gently. Store leftovers in refrigerator.