In a large mixing bowl whisk lemon juice, mayo, greek yogurt, olive oil and dijon mustard together until fully combined.
Add drained tuna on top & mix well with a spatula. Then add in kalamata olives, tomatoes, cucumbers, feta and onion. Mix again until thoroughly combined
Sprinkle with salt, dill, oregano and basil. Mix well again.
Slice peppers in halves & deseed them. Spray with olive oil & sprinkle with salt. Bake at 375 for 10 minutes
Take tongs & flip over the pepper halves to drain any water from baking. Then fill each half, top with cheese & broil for 3 minutes. Then dig in!!
I love them cold after baking, so I will throw them in my lunch box for the next few days!