In a large bowl, mix olive oil, paprika, garlic powder, onion powder, lemon pepper seasoning, salt, and lemon juice until combined.
Add cubed chicken to marinade. Coat evenly and refrigerate for at least 30 minutes.
Thread marinated chicken onto skewers. Prepare pressure cooker by placing a rack/trivet in the bottom and adding 1 cup water.
Place skewers on rack inside cooker. Lock lid, set valve to sealing, and cook on high pressure for 8 minutes.
Quick release pressure when timer completes.
In small saucepan, melt butter on low. Add minced garlic and simmer 2 minutes. Remove from heat and stir in optional lemon juice.
Brush hot skewers with the garlic butter and sprinkle with grated parmesan.
Garnish with fresh parsley or cilantro and lemon slices. Serve immediately.
Notes
Store cooled skewers in airtight container in fridge for up to 3 days. To freeze, wrap in foil and place in a sealed bag for up to 2 months. Reheat gently and enjoy!