Step 1: Prepare marinade
In a medium bowl, combine Chimichurri Churrasco Spice ‘n Easy mix, cilantro, lime juice, and agave. Slowly add olive oil while whisking until well-combined. Remove and reserve 3/4 cup marinade.
Step 2: Marinate steak
Add steak to bowl with remaining marinade. Cover and marinate for 20 min. or up to 8 hours in the fridge.
Step 3: Assemble skewers
Preheat grill or grill pan for high heat. Add pineapple, peppers, and marinated steak pieces to skewers, alternating pieces.
Step 4: Grill skewers and serve
Working in batches of 3 to 4 skewers at a time, grill skewers for 3 to 4 min. per side until steak reaches an internal temperature of 125 degrees for rare up to 160 degrees for well-done. Let rest for 5 min. Serve with reserved chimichurri sauce.