Mix marinade/salad dressing by combining the lemon juice, olive oil, red wine vinegar, garlic, honey, oregano, salt and pepper to taste.
Pour half into a bowl and add the chicken. Let marinate for at least 1 hour.
Set aside the remaining dressing to use on the salad.
Grill marinated chicken for 4-6 minutes per side on medium heat until cooked thoroughly. Set aside to rest.
Grill flatbread til nicely toasted.
Toss lettuce, tomatoes, olives, onion, and feta in a bowl with the remaining salad dressing.
Spread Pacific hummus spread on the flatbread.
Top with tossed salad mixture.
Slice the chicken breast and add on top of the flatbread.
Top with more feta and salt and pepper.