Combine chicken marinade ingredients and soak thin sliced boneless skinless chicken breasts for 30 minutes, or up to 6 hours. Grill on medium heat until cooked through.
In a mason jar with a lid, or small mixing bowl combine lime vinaigrette ingredients (lime juice, true lime, sugar, oil, onion salt, pepper) and shake/whisk until well incorporated.
Place sliced almonds in a dry pan on medium heat, stirring occasionally until toasted and golden brown. Remove almonds from heat to cool.
On two large dinner plates, assemble a heaping portion of mixed greens
Slice grilled chicken and layer on top of salad greens
Add desired amounts of diced watermelon, crumbled feta, and sliced almonds
Drizzle with lime vinaigrette before serving