Get all the prep done before you start cooking. Mince the garlic and finely chop the onion.
Remove the veins and seeds from the bell pepper, cut into bite sized pieces. 
Remove casings from Italian sausages.

Heat oil in a large skillet over medium high. Add bell pepper and sauté until it starts to soften, about 5 minutes. Add sausages, break it up into pieces and cook for 3 minutes. Stir in garlic and onion, cook for 2 minutes. Deglaze with white wine, simmer for 2 minutes. Add salt, pepper, thyme, oregano and tomato paste. Stir until incorporated. Add broth and bring to a boil.

Add tortellini, try to push them into the sauce. Let simmer over medium until the tortellini is plump and tender, 3 to 5 minutes, or according to package instructions.  

Stir in grated parmesan, finish off with freshly ground black pepper and red pepper flakes. Serve immediately.